Operation and Parts Manual

SERIES MODEL hhn31v ride-on power trowel (B & S VANGUARD DM950 GASOLINE ENGINE)

Revision #7 (04/26/11)

To find the latest revision of this publication, visit our website at: www.multiquip.com

THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.

PN: 20382 Proposition 65 Warning

Engine exhaust and some of its constituents, and some dust created by power sanding, sawing, grinding, drillingandotherconstructionactivities contains chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. Some examples of these chemicals are: Leadfromlead-basedpaints. Crystallinesilicafrombricks. Cementandothermasonryproducts. Arsenicandchromiumfromchemically treatedlumber. Your risk from these exposures varies, dependingonhowoftenyoudothistype of work. To reduce your exposure to these chemicals: ALWAYS work in a well ventilated area, and work with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

page 2 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) Silicosis/Respiratory Warnings

WARNING WARNING

SILICOSIS WARNING RESPIRATORY HAZARDS Grinding/cutting/drilling of masonry, concrete, metal and Grinding/cutting/drilling of masonry, concrete, metal and other materials with silica in their composition may give other materials can generate dust, mists and fumes off dust or mists containing crystalline silica. Silica is a containing chemicals known to cause serious or fatal basic component of sand, quartz, brick clay, granite and injury or illness, such as respiratory disease, cancer, numerous other minerals and rocks. Repeated and/or birth defects or other reproductive harm. If you are substantial inhalation of airborne crystalline silica can unfamiliar with the risks associated with the particular cause serious or fatal respiratory diseases, including process and/or material being cut or the composition of silicosis.In addition, California and some other the tool being used, review the material safety data authorities have listed respirable crystalline silica as a sheet and/or consult your employer, the material substance known to cause cancer. When cutting such manufacturer/supplier, governmental agencies such as materials, always follow the respiratory precautions OSHA and NIOSH and other sources on hazardous mentioned above. materials. California and some other authorities, for instance, have published lists of substances known to cause cancer, reproductive toxicity, or other harmful effects.

Control dust, mist and fumes at the source where possible. In this regard use good work practices and follow the recommendations of the manufacturers or suppliers, OSHA/NIOSH, and occupational and trade associations.Water should be used for dust suppression when wet cutting is feasible. When the hazards from inhalation of dust, mists and fumes cannot be eliminated, the operator and any bystanders should always wear a respirator approved by NIOSH/MSHA for the materials being used.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 3 Table of Contents HHN31V Ride-On Component Drawings Power Trowel Nameplates And Decals...... 50-51 Proposition 65 Warning...... 2 Pivot/Gearbox (Right Side) Assembly...... 52-53 Silicosis/Respiratory Warnings...... 3 Pivot/Gearbox (Left Side) Assembly...... 54-55 Table Of Contents...... 4 Gearbox Assembly...... 56-59 Parts Ordering Procedures...... 5 Control Steering (Assist) 1 Assembly...... 60-61 Training Checklist...... 6 Control Steering (Assist) 2 Assembly...... 62-63 Daily Pre-Operation Checklist...... 7 Twin Pitch Assembly. 1 (Left/Right)...... 64-65 Safety Information...... 8-13 Twin Pitch Assembly. 2 (Left/Right)...... 66-67 Specifications/Dimensions...... 14 Engine Mounting & Throttle Assembly...... 68-69 Specifications (Engine)...... 15 Engine Cradle Mounting Assembly...... 70-71 General Information...... 16 Engine Air Cleaner/Radiator Assembly...... 72-73 Components...... 18-19 Engine Muffler Assembly...... 74-75 New Machine Setup...... 20 Engine Clutch Assembly. (Old Style)...... 76-77 Basic Engine...... 21 Engine Clutch Assembly. (New Style)...... 78-79 Inspection...... 22 Engine Fuel Assembly...... 80-81 Operation...... 23-24 Drive Assembly. (Old Style)...... 82-83 Maintenance...... 25-41 Drive Assembly. (New Style)...... 84-85 Maintenance (Old Style Clutch) ...... 28-32 Spider Assembly. (Left)...... 86-87 Maintenance (New Style Clutch) ...... 33-35 Spider Assembly. (Right)...... 88-89 Troubleshooting...... 42 Stabilizer Ring Assembly...... 90-91 Troubleshooting...... 43 Seat And Frame Assembly...... 92-93 Troubleshooting...... 44 Frame And Components...... 94-95 Troubleshooting...... 45 Foot Pedals Assembly...... 96-97 Wiring Diagram...... 46 Throttle Foot Pedal Assembly...... 98-99 Explanation Of Code In Remarks Column...... 48 Battery Assembly...... 100-101 Suggested Spare Parts...... 49 Spray Assembly...... 102-103 Front Panel Assembly...... 104-105 Top Right Panel Assembly...... 106-107 E-Z Mover And Lift Handle Assembly...... 108-109 NOTICE Specifications and part numbers are subject to change Terms And Conditions Of Sale — Parts...... 110 without notice.

page 4 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) training checklist

Training Checklist No. Description OK? Date Read operation manual 1 completely. Machine layout, location of 2 components, checking of engine and hydraulic oil levels. 3 Fuel system, refueling procedure. 4 Operation of spray and lights. Operation of controls (machine 5 not running). Safety controls, safety stop switch 6 operation. 7 Emergency stop procedures. Startup of machine, pre-heat, 8 engine choke. 9 Maintaining a hover. 10 Maneuvering. 11 Pitching. 12 Matching blade pitch. Twin-Pitch™

13 Concrete fi nishing techniques.

14 Shutdown of machine. 15 Lifting of machine (lift loops). 16 Machine transport and storage.

page 6 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) daily pre-operation checklist

Daily pre-Operation Checklist       1 Engine oil level 2 Hydraulic oil level 3 Radiator coolant level 4 Condition of blades 5 Blade pitch operation 6 Safety stop switch operation 7 Steering control operation

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 7 Safety Information

Do not operate or service the equipment before reading Potential hazards associated with the operation of this the entire manual. Safety precautions should be followed equipment will be referenced with hazard symbols which at all times when operating this equipment. may appear throughout this manual in conjunction with Failure to read and understand the safety safety messages. messages and operating instructions could result in injury to yourself and others. Symbol Safety Hazard saFeTy messages The four safety messages shown below will inform you Lethal exhaust gas hazards about potential hazards that could injure you or others. The safety messages specifi cally address the level of exposure to the operator and are preceded by one of four words: DaNgeR, WaRNINg, CauTION or NOTICe. Explosive fuel hazards saFeTy symBOLs DaNgeR Indicates a hazardous situation which, if not avoided, Burn hazards WILL result in DeaTH or seRIOus INJuRy.

WaRNINg Indicates a hazardous situation which, if not avoided, COuLD result in DeaTH or seRIOus INJuRy. Rotating parts hazards CauTION Indicates a hazardous situation which, if not avoided, COuLD result in mINOR or mODeRaTe INJuRy.

NOTICE Addresses practices not related to personal injury. Pressurized fluid hazards

Hydraulic fluid hazards

page 8 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) Safety Information

geNeRaL saFeTy NOTICE CauTION „ This equipment should only be operated by trained and qualifi ed personnel 18 years of age and older. „ NeVeR operate this equipment without proper protective clothing, shatterproof glasses, respiratory protection, „ Whenever necessary, replace nameplate, operation and hearing protection, steel-toed boots and other protective safety decals when they become diffi cult read. devices required by the job or city and state regulations. „ Manufacturer does not assume responsibility for any accident due to equipment modifi cations. Unauthorized equipment modifi cation will void all warranties. „ NeVeR use accessories or attachments that are not „ Avoid wearing jewelry or loose fi tting clothes that may recommended by Multiquip for this equipment. Damage snag on the controls or moving parts as this can cause to the equipment and/or injury to user may result. serious injury. „ aLWays know the location of the nearest „ NeVeR operate this equipment when not fi re extinguisher. feeling well due to fatigue, illness or when under medication. „ aLWays know the location of the nearest fi rst aid kit. „ NeVeR operate this equipment under the infl uence of drugs or alcohol. „ aLWays know the location of the nearest phone or keep a phone on the job site. Also, know the phone numbers of the nearest ambulance, doctor and fi re department. This information will be invaluable in the case of an emergency. „ aLWays clear the work area of any debris, tools, etc. that would constitute a hazard while the equipment is in operation. „ No one other than the operator is to be in the working area when the equipment is in operation. „ DO NOT use the equipment for any purpose other than its intended purposes or applications.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 9 Safety Information

TROWeL saFeTy NOTICE DaNgeR „ aLWays keep the machine in proper running condition. „ Engine fuel exhaust gases contain poisonous carbon „ Fix damage to machine and replace any broken parts monoxide. This gas is colorless and odorless, and can immediately. cause death if inhaled. „ aLWays store equipment properly when it is not being „ The engine of this equipment requires an adequate free used. Equipment should be stored in a clean, dry location fl ow of cooling air.NeVeR operate this equipment in any out of the reach of children and unauthorized personnel. enclosed or narrow area „ A safety manual for operating and maintenance where free fl ow of the air is personnel of concrete power trowels produced by the restricted. If the air fl ow is Association of Equipment Manufacturers (AEM) can be restricted it will cause injury obtained for a fee by ordering through their website at to people and property and www.aem.org. serious damage to the DANGEROUS GAS FUMES equipment or engine. Order FORM PT-160 „ NeVeR operate the equipment in an explosive eNgINe saFeTy atmosphere or near combustible materials. An explosion or fi re could result causing severe WaRNINg bodily harm or even death. „ DO NOT place hands or fingers inside engine WaRNINg compartment when engine is running. „ If applicable, NeVeR use your hand to fi nd „ NeVeR operate the engine with heat shields or hydraulic leaks. Use a piece of wood or guards removed. cardboard. Hydraulic fl uid injected into the „ Keep fi ngers, hands hair and clothing away skin must be treated by a knowledgable from all moving parts to prevent injury. physician immediately or severe injury or death can occur. „ DO NOT remove the radiator cap while the engine is hot. High pressure boiling water will gush out „ aLWays keep clear of rotating or moving of the radiator and severely scald any persons in the parts while operating the trowel. general area of the trowel. „ NeVeR disconnect any emergency „ DO NOT remove the coolant drain plug or safety devices. These devices are while the engine is hot. Hot coolant will intended for operator safety. Disconnection of these gush out of the coolant tank and severely devices can cause severe injury, bodily harm or even scald any persons in the general area of death. Disconnection of any of these devices will void the trowel. all warranties. „ DO NOT remove the engine oil drain plug while the CauTION engine is hot. Hot oil will gush out of the oil tank and „ NeVeR allow passengers or riders on the trowel during severely scald any persons in the general area of the operation. trowel. „ NeVeR lubricate components or attempt service on a CauTION running machine. „ NeVeR touch the hot exhaust manifold, „ NeVeR place your feet or hands inside the guard rings muffl er or cylinder. Allow these parts to cool while starting or operating this equipment. before servicing equipment.

page 10 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) Safety Information

NOTICE BaTTeRy saFeTy „ NeVeR run engine without an air fi lter or with a dirty air DaNgeR fi lter. Severe engine damage may occur. Service air fi lter frequently to prevent engine malfunction. „ DO NOT drop the battery. There is a possibility that the battery will explode. „ NeVeR tamper with the factory settings of the engine or engine governor. Damage „ DO NOT expose the battery to open fl ames, to the engine or equipment can result sparks, cigarettes, etc. The battery contains if operating in speed ranges above the combustible gases and liquids. If these maximum allowable. gases and liquids come into contact with a fl ame or spark, an explosion could occur. FueL saFeTy WaRNINg DaNgeR „ aLWays wear safety glasses when „ DO NOT start the engine near spilled fuel or combustible handling the battery to avoid eye irritation. fl uids. Fuel is extremely fl ammable and its vapors can The battery contains acids that can cause cause an explosion if ignited. injury to the eyes and skin. „ aLWays refuel in a well-ventilated area, away from „ Use well-insulated gloves when picking up sparks and open fl ames. the battery. „ aLWays use extreme caution when working with „ aLWays keep the battery charged. If the battery is not fl ammable liquids. charged, combustible gas will build up. „ DO NOT fi ll the fuel tank while the engine is running „ DO NOT charge battery if frozen. Battery can explode. or hot. When frozen, warm the battery to at least 61°F (16°C). „ DO NOT overfi ll tank, since spilled fuel could ignite if it „ aLWays recharge the battery in a well-ventilated comes into contact with hot engine parts or sparks from environment to avoid the risk of a dangerous concentration the ignition system. of combustible gases. „ Store fuel in appropriate containers, in well-ventilated „ If the battery liquid (dilute sulfuric acid) areas and away from sparks and fl ames. comes into contact with clothing or skin, rinse skin or clothing immediately with „ NeVeR use fuel as a cleaning agent. plenty of water. „ DO NOT smoke around or near the „ If the battery liquid (dilute sulfuric acid) comes into equipment. Fire or explosion could result contact with eyes, rinse eyes immediately with plenty from fuel vapors or if fuel is spilled on a of water and contact the nearest doctor or hospital to hot engine. seek medical attention. CauTION „ aLWays disconnect the NegaTIVe battery terminal before performing service on the equipment. „ aLWays keep battery cables in good working condition. Repair or replace all worn cables.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 11 Safety Information TRaNspORTINg saFeTy TOWINg saFeTy CauTION CauTION „ NeVeR allow any person or animal to „ Check with your local county or state safety stand underneath the equipment while towing regulations, in addition to meeting lifting. Department of Transportation (DOT) Safety Towing Regulations, before towing „ Ride-on trowels are very heavy and your trowel. awkward to move around. Use proper heavy lifting procedures and DO NOT „ In order to reduce the possibility of an accident while attempt to lift the trowel by the guard rings. transporting the trowel on public roads, aLWays make sure the trailer that supports the trowel and the towing NOTICE vehicle are mechanically sound and in good operating „ The easiest way to lift the trowel is to utilize the lift loops condition. that are welded to the frame. These lift loops are located „ aLWays shutdown engine before transporting to the left and right sides of the operator’s seat. „ Make sure the hitch and coupling of the towing vehicle A strap or chain can be attached to these lift loops, are rated equal to, or greater than the trailer “gross allowing a forklift or crane to lift the trowel up onto and vehicle weight rating.” off of a slab of concrete. The strap or chain should have a minimum of 2,000 pounds (1,000 kg) lifting capacity „ aLWays inspect the hitch and coupling for wear. NeVeR and the lifting gear must be capable of lifting at least this tow a trailer with defective hitches, couplings, chains, etc. amount. „ Check the tire air pressure on both towing vehicle and „ NeVeR transport trowel with fl oat pans attached unless trailer. Trailer tires should be infl ated to 50 psi cold. safety catches are used and are specifi cally cleared for Also check the tire tread wear on both vehicles. such transport by the manufacturer. „ aLWays make sure the trailer is equipped with a safety „ NeVeR hoist the trowel more than three feet off the chain. ground with fl oat pans attached. „ aLWays properly attach trailer’s safety chains to towing „ Before lifting, make sure that the lift loops are not vehicle. damaged. „ aLWays make sure the vehicle and trailer directional, „ Always make sure crane or lifting device has been backup, brake and trailer lights are connected and properly secured to the lift loops of the equipment. working properly. „ aLWays shutdown engine before transporting. „ DOT Requirements include the following: „ NeVeR lift the equipment while the engine is running. • Connect and test electric brake operation. „ Tighten fuel tank cap securely and close fuel cock to • Secure portable power cables in cable tray with tie prevent fuel from spilling. wraps. „ Use adequate lifting cable (wire or rope) of suffi cient „ The maximum speed for highway towing is 55 MPH unless strength. posted otherwise. Recommended off-road towing is not to exceed 15 MPH or less depending on type of terrain. „ DO NOT lift machine to unnecessary heights. „ Avoid sudden stops and starts. This can cause skidding, „ aLWays tie down equipment during transport by or jack-knifi ng. Smooth, gradual starts and stops will securing the equipment with rope. improve towing. „ Avoid sharp turns to prevent rolling.

page 12 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) Safety Information

„ Trailer should be adjusted to a level position at all times when towing. „ Raise and lock trailer wheel stand in up position when towing. „ Place chock blocks underneath wheel to prevent rolling while parked. „ Place support blocks underneath the trailer’s bumper to prevent tipping while parked. „ Use the trailer’s swivel jack to adjust the trailer height to a level position while parked. eNVIRONmeNTaL saFeTy NOTICE „ Dispose of hazardous waste properly. Examples of potentially hazardous waste are used motor oil, fuel and fuel fi lters. „ DO NOT use food or plastic containers to dispose of hazardous waste. „ DO NOT pour waste, oil or fuel directly onto the ground, down a drain or into any water source.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 13 SPECIFICATIONS/DIMENSIONS

1 C HEIGHT

B WIDTH

A LENGTH

Figure 1. HHN Dimensions Table 1. HHN Dimensions/Specifications Specification Parameter HNN31V (Vanguard) A–Length – in. (cm) 97.0 (246.4) B–Width – in. (cm) 50.0 (127) C–Height – in. (cm)1 46.0 (117) Weight – lbs. (kgs.) Operating 1,042 (477) Weight – lbs. (kgs.) Shipping 1,224 (555) Sound Pressure – dBA2 95 Vibration – ft/s2 (m/ s2)3 <8.0 (2.5) Engine – H.P. 31 Fuel Tank – gallons (liters) 5 (19) Rotor – RPM 60 to 160 Path Width – in. (cm) 91 (231) Lubrication Oil ISO 220 GR 5EP Gear Box Oil Capacity 144 OZ. Fuel Consumption (Full Load) 0.54 LB/BHP-HR Radiator Capacity 1.0 GAL. NOTEs 1. This value does not include seat height. To obtain total 3. The vibration level indicated is the maximum RMS height (seat ) add 4 inches (10.2 cm.). (Root Mean Square) value obtained at the handle grip while operating the ride-on trowel on curing 2. Sound pressure is “A” weighted . Measured at the concrete in a manner most often experienced in operators ear position while the ride-on trowel is “normal” circumstances. Values were obtained from operating at full throttle on concrete in a manner most all three axes of motion. The values shown represent often experienced in “normal ” circumstances. Sound the maximum RMS value from these measurements. pressure may vary depending upon the condition of the concrete. Hearing protection is always recommended.

page 14 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) SPECIFICATIONS (ENGINE)

Table 2. HHN31V Engine Specifications Model Briggs & Stratton Vanguard DM950G Type Gasoline Engine Cylinders 3 Piston Displacement 58.1 cu.in. (952 cc) Bore and Stroke 2.83 in.x 3.07 in. (72 mm x 78 mm) Max. Torque 51.7 ft lbs (70.1 N·m) @ 220rpm Engine Oil Capacity 3.5 qt. (3 liters) Fuel Tank 5 gal.(18.9 liters) Dry Weight 159 lbs. (72.1 Kg) 17.09 in. x 17.44 in. x 20.54 in. Dimensions (L x W x H) (434 mm x 443 mm x 522 mm)

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 15 general information

HHN RIDE-ON TROWEL FAMILIARIZATION Figure 2 and Figure 3 show the location of the controls, indicators and general mainte nance parts. Each control The HHN series Ride-On Power Trowel is designed for the may perform more than one function. floating and finishing of concrete slabs. Gearboxes Take a walk around the HHN Ride-On Power Trowel. Take notice of all the major components (see Figure 2 and Figure The HHN Ride on Power Trowel consist of two separate 3) like the engine, blades, air cleaner, fuel system, fuel shut- gearbox assemblies that are enclosed in rugged cast off valve, ignition switch etc. Check that there is always oil aluminum gear cases. in the engine, and gear oil in the gear box assembly. The gearbox casing holds 50% more oil capacity than Read all the safety instructions carefully. Safety instructions competitors, which allows more lubrication to be provided will be found throughout this manual and on the machine. to critical points. Keep all safety information in good, readable condition. Operators should be well trained on the operation and Steering Assist maintenance of the HHN Ride-On Power Trowels. Dual control levers located in front of the operator's seat Look at the operator control levers. Grab the control levers are provided for steering the HHN Ride on Power Trowel. and move them around a bit. Look to see how moving the The control levers are linked to two spring loaded cylinders. control levers causes the gearboxes and frame to move. Push the left control lever forward and pull the right control Notice the foot pedal which controls the engine speed. Also lever backward and the trowel will rotate clockwise on take a look at the main driveline of the trowel. Take note approximately a center axis. Pull the left control lever and reference how the belts look, this is the way the belts backward and push the right control lever forward and should look when adjusted properly. the trowel will rotate counterclockwise. See Table 3 for a complete description on the control levers directional Before using your HHN Ride-On Power Trowel, test it on positioning. a flat watered down section of finished concrete. This trial test run will increase your confidence in using the trowel Constant Velocity Joints (CV-Joints) and at the same time it will familiarize you with the trowel’s Constant velocity joints insure the efficient transfer of power controls and indicators. In addition you will understand how to the drive shaft and maintain the timing of the gearboxes the trowel will handle under actual conditions. without any chance of slippage. Engine Training The HHN Ride-On Power Trowel is equipped with a liquid For training, please use the “TRAINING CHECKLIST” cooled 31 HP Vanguard gasoline engine. Refer to the located in the front of this manual. This checklist is not engine owner’s manual for specific instructions regarding intended to be a substitu te for proper training but will engine operation. This manual is included with the ride- provide an outline for an experienced operator to provide on trowel at the time of shipping from Whiteman. Please training to a new operator. contact your nearest Multiquip Dealer for a replacement should the original manual disappear. Blades The blades of the ride-on power trowel finish the concrete as they are swirled around the surface. Blades are classified as combination (10 or 8 inches wide) and finish (6 inches wide). The HHN ride-on power trowels are equipped with five blades per rotor equally spaced in a radial pattern and attached to a vertical rotating shaft by means of a spider assembly.

page 16 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) NOTES

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 17 components

1. Seat — Place for operator to sit. Engine will not start 10. Water Indicator Light — Lights red when water unless operator is seated. Seat is adjustable, fore and temperature is high. aft for operator comfort. 11. Charge Indicator — Lights red when electrical system 2. Steering Control Lever (right side) — Allows the unit is not charging properly. to move in either a forward, reverse left or right direction. 12. Hour Meter — Indicates number of hours the key 3. Retardant Spray Control Buttons — When pressed switch is in the "ON" position. allows retardant spray to flow through the spray nozzle 13. Choke Control Lever — In cold weather pull this lever located at the front of the machine. forward about half way to start engine. After engine 4. Twin Pitch Control — Adjusts the blade pitch for right warms push knob all the way in. side of the trowel. Turn the crank as marked on its top 14. Fuel Gauge/Filler Cap — Indicates the amount of fuel surface to increase or decrease blade pitch. in the fuel tank. Remove this cap to add fuel. 5. Twin Pitch Control — Adjusts the blade pitch for left 15. Fuel Tank — Holds 5 gallons of unleaded gasoline. side of the trowel. Turn the crank as marked on its top surface to increase or decrease blade pitch. 16. Spare Belt Carrier — Contains a spare belt. Belt is used on the drive pulley. 6. Steering Control Lever (left side) — Allows the unit to move in either a forward, reverse left or right direction. 17. Left Foot Riser — Operator foot rest pedal. 7. Light Switch — When activated, turns on four halogen 18. Spray Nozzles — Spray nozzle for retardant. lights. Lights offer better visibility when working indoors. 19. Right Foot Pedal — Controls blade speed. Slow blade 8. Ignition Switch — With key inserted turn clockwise speed is accomplished by slightly depressing the foot to start engine. pedal. Maximum blade speed is accomplished by fully depressing the foot pedal. 9. Oil Indicator Light — Lights red when oil pressure is low.

3 1 3 2 6

4 9 10 11

8 14 13 5 15 7 16 19 17

12 18

20 Figure 2. HHN Components (Front)

page 18 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) components

20. EZ- Mover Boss — Front -side insertion point for EZ 28. Overflow Bottle — Supplies coolant to the radiator Mover. Used when the transporting of the trowel is when radiator coolant level is low. Fill to indicated level required. as shown on bottle. 21. Radiator/Filler Cap — Holds coolant or water 29. Engine Air Filter — Prevents dirt and other debris from necessary to keep engine at a safe operating entering the fuel system. Lift locking latch on air filter temperature. Remove this cap to add water or cannister to gain access to filter element. antifreeze. DO NOT revove this cap when the engine 30. Engine Dip Stick — Indicates engine oil level. Add is warm. oil as required. 22. Lift Loops — Located on both the left and right sides 31. Oil Filter — Provides oil filtering for the engine. of the main frame. Used when the trowel must be lifted onto a concrete slab. 32. Battery — Provides +12V DC power to the electrical system 23. Lights — Four 12 volt halogen lights are provided with this unit. 33. Retardant Spray Motors — Used in conjunction with the left and right spray control buttons. 24. Right-Side Spider — Consists (basic) of trowel arms, blades, wear plate, and thrust collar etc. 34. Retardant Spray Tank — Holds 5 gallons of retardant. 25. Left-Side Spider — Consists (basic) of trowel arms, 35. Belt Guard — Encloses drive belt used in conjunction blades, wear plate, and thrust collar etc. with clutch. 26. Safety Kill Switch — Shuts down engine when 36. EZ- Mover Boss — Back- side insertion point for EZ operator is not sitting in seat. Mover. Used when the transporting of the trowel is required. 27. Engine Oil Filler Cap — Remove this cap to add engine oil. 37. Oil Sight Glass — Indicates the level of the hydraulic oil in the gear box.

27 26 21 23 29 28

35 22 30

31 RETARDANT ONLY

25 37 32 33 34 36 24

Figure 3. HHN Components (Rear)

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 19 new machine setup The purpose of this section is to assist the user in setting Seat Assembly up a NEW trowel. If the trowel is already assembled, (seats, handles, knobs and battery), this section can be skipped. The seat is not installed on the trowel for shipping purposes. To attach the seat, perform the following: NOTICE NOTICE A new ride-on trowel cannot be put into service until the following installation instructions are completed. These H-series trowels have a seat that is mounted on tracks, instructions only need to be performed at the time of similar to an automobile seat. This seat can be adjusted unpacking a NEW trowel. fore and aft via the control lever under the front of the seat.

Before packaging and shipping, this ride-on power trowel 1. Remove the seat from the protective wrapping. was run and tested at the factory. If there are problems, 2. Remove the bolts on the bottom of the seat, and place please let us know. seat on the seat mounting plate, then insert the bolts Control Handle Assembly through the holes or slots on the seat mounting plate and tighten. The steering control handles are not attached to the trowel’s two lower handles at the time of shipment. To attach the battery setup steering control handles to the lower handle assemblies, This trowel was shipped with a wet charged battery. This perform the following: battery may need to be charged for a brief period of time 1. Remove the bolts from the plastic bag tied to the as per the manufacturer instructions. control towers. CAUTION 2. Remove all protective wrapping and straps from the Use all safety precautions specified by the battery control handles. manufacturer when working with the battery. 3. Slip the top (loose) control handle piece into the base of the corresponding handle, making sure to line up To install the battery on the trowel, make sure that the the holes. battery is well seated in the battery box. The positive cable, normally red, is associated with the "+" symbol on the 4. Install the bolt through the lined up holes and tighten battery. The negative cable, normally black, is associated the acorn nut onto the threaded end. with the "-" symbol on the battery. See Figure 4. Connect NOTICE the positive cable to the positive terminal on the battery first, then connect the negative cable to the negative Models equipped with adjustable height handles are terminal. Close the plastic battery box cover and secure adjusted by placing the bolt through the set of holes the battery box. that bring the handles to a height most comfortable for the operator. NEGATIVE CABLE POSITIVE (BLACK) 5. Pay close attention to any wires that may be inside CABLE (RED) the control handles. DO NOT pinch or cut any wires during installation. 6. Remove the two knobs from the plastic bag for the pitch control tower cranks and install the knobs onto the tower crank levers.

Figure 4. Battery Cable Orientation

page 20 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) BASIC ENGINE

1 2 3 7

14

13 8

4 12 11 9

10 6 5 10

Figure 5. Engine Components

INITIAL SERVICING 8. Coolant Temperature Sending Unit — Device that measures coolant temperature. The engine (Figure 5) must be checked for proper lubrication and filled with fuel prior to operation. Refer to the 9. Governor Lever — This lever restricts engine speed manufacturer’s engine manual for instructions and details (high idle or low idle) through a speed control device of operation and servicing. The engine shown above is a linked to the accelerator system. Briggs & Stratton Vanguard Gasoline engine. Operation for 10. Oil Drain Plugs (2) — Remove to drain crankcase other types of engines may vary somewhat. oil. Always dispose of used oil and oil filters in an 1. Thermostat — Regulates the temperature of the environmentally safe manner. DO NOT allow used oil engine coolant. to drain onto the ground or into a water runoff drain. 2. Oil Filler Cap — Remove to add engine oil. 11. Oil Filter — Spin-on type, filters oil for contaminants. 3. Ignition Coil — Regulates coolant temperature 12. Oil Dip Stick — Remove to check amount and condition of oil in crankcase. 4. Electric Starter — Starts engine when ignition key is rotated to the "ON" position. 13. Oil Pressure Sending Unit — Device that measures engine oil pressure. 5. Oil Pan — Holds a maximum of 3.5 quarts (3.3 liters) of motor oil. 14. Carburetor — Low-emission carburetor equipped with an idle mixture valve with a limiter which allows 6. Alternator — Provides charge for battery and voltage adjustment. for the +12 VDC electrical system. 7. Spark Plug — Provides spark to the ignition system. Set spark plug gap to 0.028 ~ 0.031 inch (0.6~0.7 mm). Clean spark plug once a week.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 21 inspection

This section is intended to assist the operator with the initial FILL PLUG inspection of the HHN trowel. It is extremely important that this section be read carefully before attempting to use the trowel in the field. GEAR BOX DO NOT use your trowel until this section is thoroughly DRAIN PLUG understood. SIGHT GLASS (OIL CHECK) CAUTION Figure 7. Gearbox Oil Plugs/Sight Glass Failure to understand the operation of the HHN trowel could result in severe damage to the trowel or personal fuel injury. Determine if the engine fuel is low (Figure 8). If fuel level See Figure 2 and Figure 3 for the location of any control is low, remove the fuel filler cap and fill with appropriate or indicator referenced in this manual. engine fuel. The HHN31V uses diesel fuel. Engine Oil Level 1. Pull the engine oil dipstick from its holder. FUEL

2. Determine if engine oil is low (Figure 6), add correct E F amount of engine oil to bring oil level to a normal safe level. (See Table 4). Figure 8. Fuel Gauge DANGER ENGINE OIL Handle fuel safely. Motor fuels are highly flammable DIPSTICK and can be dangerous if mishandled. DO NOT smoke while refueling. DO NOT attempt to refuel the ride-on trowel if the engine is hot or running. MAX SAFE OPERATING ADD OIL LEVEL ENGINE MIN CAUTION OIL Never store the ride-on trowel with fuel in the tank for Figure 6. Engine Oil Dipstick any extended period of time. Always clean up spilled fuel immediately. gearbox oil level 1. Check the gearbox oil level in both gearboxes by viewing the sight glass at the rear of the gearbox. See Figure 7. 2. The oil level of the gear box should be at the half-way point of the sight glass (Figure 7). The gear box oil capacity is 1 U.S. Gallon, (3.79 liters). If additional oil is required, unscrew the oil fill plug located on top of the gearbox, and refill with ISO 220 A GMA GR 5 EP oil.

page 22 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) operation Starting the Engine 5. Turn the ignition key clockwise to the (start) position. The oil, charge, and preheat indicator lights (Figure 1. Place one foot on the trowel’s platform, grab ahold of 10) should be ON. any part of the frame, lift yourself onto the trowel, then NOTICE sit down in the operator’s seat. OIL, CHARGE, and PREHEAT indicator lights come on NOTICE when ignition switch is in the ON position, and the engine The HHN31V trowel is equipped with a safety stop is NOT running. switch that will not allow the engine to start unless an operator is sitting in the operator’s seat. The weight of an operator depresses an electrical switch, which allows the engine to start. OIL W AT WARNING ER NEVER disable or disconnect the safety stop switch. It is CH ARG provided for the operator’s safety, and injury may result E if it is disabled, disconnected or improperly maintained.

NOTICE Using the safey stop switch to stop the engine after every use will verify that the switch is working properly. Figure 10. Oil and Charge Indicator Lights Remember to turn the key to the “OFF” position after 6. Turn ignition key fully clockwise and listen for engine stopping the machine. Not doing so may drain the battery. to start. Once engine has started release ignition key. 7. If the engine fails to start in this manner, consult the engine owner’s manual supplied with the trowel. 8. Test the safety stop switch by standing up briefly. The switch under the seat should cause the engine to stop. If the switch fails to shut down the engine, turn off the engine with the key switch and fix the safety stop switch. See Troubleshooting tables for possible problems. Repeat this section a few times to get fully acquainted with the engine starting procedure.

Figure 9. Blade Speed Control Foot Pedal 2. The right foot pedal (Figure 9) controls blade and engine speed. The position of the foot pedal determines the blade speed. Slow blade speed is obtained by slightly depressing the pedal. Maximum blade speed is obtained by fully depressing the pedal. 3. Keep your foot OFF the pedal (right foot pedal). Start the engine at idle (without touching the foot pedal). 4. Insert the ignition key into the ignition switch.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 23 operation steering 4. Practice maneuvering the ride-on trowel using the information listed in Table 3. Try to practice controlled Two control levers located in front of the operator’s seat motions as if you were finishing a slab of concrete. provide directional control for the HHN trowel. Table 3 Practice edging and covering a large area. illustrates the various directional positions of the joysticks and their effect on the ride-on trowel. 5. Try adjusting the pitch of the blades. This can be done with the ride-on trowel stopped or while the trowel is NOTICE moving, whatever feels comfortable. Test the operation All directional references with respect to the steering of optional equipment like retardant spray and lights control levers are from the operator’s seat position. if equipped. 6. Push both the left and right joysticks backward and 1. Push both the left and right control levers forward. See repeat steps 3 through 6 while substituting the word Figure 11. reverse for forward. Table 3. Control Lever Directional Positioning Control Lever Direction Results Move Control Lever Causes the ride-on trowel to LEFT Left Forward move forward and to the right. CONTROL Move Control Lever Causes the ride-on trowel to LEVER Left FORWARD Backward move backward and to the left. DIRECTION Move Control Lever Causes the ride-on trowel to Right Forward move forward and to the left. Causes the ride-on trowel to Move Control Lever Right move backward and to the Backward RIGHT right. Move Both Control Levers Causes the ride-on trowel to CONTROL Left and Right LEVER Forward move forward in a straight line. Causes the ride-on trowel to Move Both Control Levers Left and Right move backward in a straight Figure 11. Left and Right Control Levers Backward line. Move Both Control Levers Causes the ride-on trowel to 2. With your right foot, quickly depress the right foot Left and Right to the Right move to the right. pedal halfway. Notice that the ride-on power trowel Move Both Control Levers Causes the ride-on trowel to Left and Right begins to move in a forward direction. Return both to the Left move to the left joystick controls to their neutral position to stop forward movement, then remove your right foot from the right CAUTION foot pedal. Trowel arms can be damaged by rough handling or by 3. Practice holding the machine in one place as you striking exposed plumbing or forms while in operation. increase blade speed. When about 75% of maximum ALWAYS look-out for objects which might cause blade speed has been reached, the blade will be damage to the trowel arms. moving at proper finishing speed. The machine may be difficult to keep in one place. Trying to keep the ride-on trowel stationary is a good practice for operation.

page 24 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) maintenance

When performing maintenance on the trowel or engine, 3. Replace gearbox lubricant. follow all safety messages and rules for safe operation 4. Check and adjust blade speed. stated at the beginning of this manual. WARNING See the engine manual supplied with your machine for appropriate engine maintenance schedule and Certain maintenance operations or machine troubleshooting guide for problems. adjustments require specialized knowledge and skill. Attempting to perform maintenance operations or WARNING adjustments without the proper knowledge, skills or Accidental starts can cause severe injury training could result in equipment damage or injury to or death. personnel. If in doubt, consult your dealer. ALWAYS place the ON/OFF switch in the OFF position before performing maintenance. air cleaner (daily) The Vanguard engine is equipped with a replaceable, high- Disconnect negative battery cable from density paper air cleaner element. Check the air cleaner battery before servicing. daily or before starting the engine. Check for and correct ALWAYS allow the engine to cool before heavy buildup of dirt and debris along with loose or servicing. NEVER attempt any maintenance damaged components (Figure 12). work on a hot (muffler, radiator, etc.) trowel. AIR CLEANER BODY MAINTENANCE SCHEDULE

Daily (8-10 Hours) CARTRIDGE 1. Check the fluid levels in the engine and gearboxes, fill as necessary. COVER 2. Check V-belt. LATCHES Weekly (30-40 Hours) (COVER CLAMPS) 1. Relube arms, thrust collar and steering links. Figure 12. Air Cleaner Components 2. Replace blades if necessary. 1. Unlock the cover clamps and remove cover. 3. Check the engine air filter and change as necessary. 2. Remove cartridge from air cleaner body. 4. Replace engine oil and filter as necessary, see engine manual. 3. Clean cartridge by gently tapping the end with the handle of a screwdriver. Replace cartridge if very dirty Monthly (100-150 Hours) or damaged. 1. Remove, clean, reinstall and relube the arms and thrust 4. Carefully clean out the air cleaner cover. collar. Adjust the blade arms. 5. Install cartridge in body. 2. Replace gearbox lubricant after the first 100 hours of operation. Replace every 500-600 hours. 6. Install cover and lock cover clamps. 3. Check drive belt for excessive wear. NOTICE Yearly (500-600 Hours) Operating the engine with loose or damaged air cleaner 1. Check the arm bushings, thrust collar bushings, shaft components could allow unfiltered air into the engine seals and belts. Replace if necessary causing premature wear and failure. 2. Check pitch control cables for wear.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 25 maintenance

Engine Oil And Filter PRIMING PUMP 1. Change the engine oil and filter after the first 5 hours of use, then change oil every 6 months or 150 hours. O-RING 2. Remove the oil filler cap (Figure 5), and fill engine crankcase with recommended type oil as listed in Table 4. Fill to the upper limit of dipstick. DRAIN 3. Crankcase oil capacity with oil filter replacement is PLUG 6.72 qts. (7.4 liters). Oil Filter (300 Hours) FUEL SENSOR 1. Replace the engine oil filter (Figure 13) every other oil FILTER change or 300 hours. Refer to your engine manual for WIRE specific details to perform this operation. Figure 14. Fuel Filter Oil And Fuel Lines „„Check the oil and fuel lines and connections regularly SEAL for leaks or damage. Repair or replace as necessary. „„Replace the oil and fuel lines every two years to maintain the line's performance and flexibility. radiator/cooling system

WARNING Hot coolant can cause severe burns. DO NOT remove cap if radiator is HOT. Figure 13. Oil Filter 2. Be sure to coat the seal of the new oil filter with clean engine oil. 1. Check and clean radiator fins. Table 4. Recommended Viscosity Grades 2. Check cooling water. 30 3. Check radiator hoses for fatigue or cracking. 10W-30, 10W-40, 10W-50 4. Check radiator cap seal. 5W-30 Refer to your engine manual for additional information. F -20 0 20 32 40 60 80 100 C -30 -20 -10 0 10 20 30 40 TEMPERATURE RANGE EXPECTED BEFORE NEXT OIL CHANGE fuel filter Replace the engine fuel filter (Figure 14) every 800 hours. Refer to your engine manual for specific details to perform this operation.

page 26 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) maintenance battery/charging system DANGER Flammable, explosive gas. (produces hydrogen gas while charging or during operation). Keep area around battery well ventilated and keep from any fire source. Battery electrolyte contains corrosive, toxic chemical. (dilute sulfuric acid). Avoid contact with eyes and skin. Shock or fire due to electric short- circuit. Disconnect battery cables before inspecting electrical system and never “spark” battery terminals to test for charge.

1. Check and clean battery terminals for corrosion. 2. Check and keep battery electrolyte between upper and lower limits indicated on the battery. Never operate or recharge without sufficient fluid in the battery. 3. Never attempt to charge a battery that is frozen. The battery can explode unless first allowed to thaw. 4. Disconnect the negative terminal ( - ) of the battery during storage. If unit will be stored where ambient temperature will drop to -15° C or less, remove and store battery in a warm, dry place. Long Term Storage „„Remove the battery. „„Drain fuel from fuel tank. „„Clean exterior with a cloth soaked in clean oil. „„ Store unit covered with plastic sheet in moisture and dust-free location out of direct sunlight. CAUTION Never store the ride-on trowel with fuel in the tank for any extended period of time. Always clean up spilled fuel immediately.

Engine Tune-Up See the engine manual supplied with your machine for specific information on tuning up your engine as well as appropriate maintenance schedule and troubleshooting guide for problems.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 27 maintenance (old style clutch)

NOTICE 1. Remove Drive Belt Guard Cover. See Figure 16. This section is intended to aid users in the maintenance of drive assemblies with an old style Comet clutch.

Checking The Drive Belt The drive belt needs to be changed as soon as it begins to show signs of wear. DO NOT reuse a belt under any circumstances. Indications of excessive belt wear are fraying, squealing when in use, belts that emit smoke or a DRIVE burning rubber smell when in use. BELT COVER Under normal operating conditions, a drive belt may last approximately 150 hours. If your trowel is not reaching this Figure 16. Drive Belt Cover kind of life span for drive belt wear, check the drive belt for 2. Squeeze the drive belt as shown in Figure 17, and pull proper pulley alignment and spacing . the belt upwards. This will spread open the faces of the To gain access to the drive belt, remove the drive belt guard lower drive pulley. cover, then visually inspect the drive belt for signs of damage or excessive wear. If the drive belt is worn or damaged, replace the drive belt. WARNING DRIVE DO NOT attempt to insert hands or tools into BELT the belt area while the engine is running and LOWER the safety guard has been removed. Keep PULLEY fingers, hands, hair and clothing away from all moving parts to prevent bodily injury. Figure 17. Expanding Lower Drive Pulley 3. Insert the wooden block (Figure 17) between the moveable WARNING face and the fixed face of the lower drive pulley. See Figure 20. This block will help keep the lower drive pulley faces DO NOT remove the V-belt guard cover open while installing the new drive belt. until the muffler has cooled. Allow the entire trowel to cool down before performing this procedure. WOOD Removing the Drive Belt BLOCK „„Leave the existing drive belt intact until instructed to cut it. „„Leave the engine in place for this procedure. It is not necessary to slide the engine to replace the drive belt. Figure 18. Wood Block „„Have a 3/4 x 1 x 3-1/4 inch wooden block available. 4. If the belt is not being reused (recommended), CUT LENGTH WIDTH the drive belt. Ensure all belt remnants are removed 3.25 IN. 1.00 IN. HEIGHT from the pulleys. .75 IN.

Figure 15. Wooden Block for Spacer

page 28 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) maintenance (old style clutch) Installing Drive Belt 2. To replace the drive belt with the spare drive belt, (Using Replacement Drive Belt) remove the 2 bolts that secure the drive belt carrier. (Figure 19) This will allow free movement of the belt The HHN31V Ride-On Power Trowel is equipped with a for installation. Take care with to not contaminate the replacement drive belt (spare) carrier, which is mounted relplacement belt with grease or dirt. on the inboard side of the fuel tank near the clutch. Make sure that there is ALWAYS a spare drive belt in the drive 3. With the wood block holding the lower pulley open, belt carrier before the trowel is placed on a slab to finish place the replacement belt into the lower pulley first. concrete. Work the belt over the upper drive pulley into the pulley groove. In the event of a drive belt failure, the spare (replacement) drive belt can be used for quick replacement at the job site 4. Squeeze the belt enough to remove the wood block. to continue trowel operation. With the block removed, release the tension on the belt. 1. If necessary, refer to the “Removing the Drive Belt” 5. Reinstall the spare belt carrier and the drive belt guard. section. Ensure all remnants of old belt have been 6. Replace the spare belt before the next trowel use. See removed from pulleys. “Spare Drive Belt Replacement” procedure.

SPARE BELT HOLDER

WOOD BLOCK

CV-JOINT

DRIVE LOWER BELT PULLEY

Figure 19. Installing Drive Belt

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 29 maintenance (old style clutch) Spare Drive Belt Replacement torque converter To replace a spare drive belt, be prepared to disconnect the The HHN31V trowel is equipped with a Torque Converter CV-joint from the left-side gearbox. See Figure 20. which supplies torque to both the left and right gear boxes. 1. Place the trowel on suitable supports and observe all The function of the a torque converter is to automatically safety precautions. deliver the correct amount of torque required by the trowel under all load conditions. This enables the trowel to deliver 2. Remove the three screws that secure the CV-joint to the necessary torque for float pan applications and the high the left-side gearbox coupler. rotor speeds required for burnishing concrete. 3. Once the CV-joint has been separated from the left- The torque converter is of the variable pitch pulley type, side gearbox, push the CV-joint inward so that a gap (Figure 21) connected by a drive belt. exists between the gearbox and the CV-joint. Slide the spare V-belt between the gearbox coupler and the DRIVE CV-joint. Avoid contaminating the replacement belt with BELT TORQUE grease or oil when sliding it between the CV-Joint and CONVERTER gearbox coupler. VARIABLE PITCH 4. Place the spare drive belt inside the drive belt carrier, PULLEY and secure the spare belt carrier to the inboard side of the left gearbox. Figure 21. Torque Converter/Variable Pitch 5. Install the three screws that secure the CV-joint to the Pulley left-side gearbox coupler. Drive Pulley SPARE BELT The drive pulley uses centrifugal force (Figure 22 and HOLDER Figure 23) to create a belt squeeze force transmitted at the pulley faces. This condition functions as an automatic clutch. CENTRIFUGAL FORCE

FIXED FACE VARIABLE FORCE LEFT BELT SIDE CV-JOINT GEARBOX SQUEEZE BOLT FORCE NEW (REMOVE SPARE 3 PLACES) BELT Figure 22. Torque Converter (Centrifugal Force) Figure 20. Replace Spare Belt

page 30 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) maintenance (old style clutch) As shown in Figure 22, centrifugal force pushes the How It Works roller arms (Figure 23) against the ramp plate, forcing the moveable face toward the fixed face and squeezing the belt Refer to Figure 25. CENTRIFUGAL A B C . FORCE

DRIVE PULLEY

DISTANCE DRIVE PULLEY MOVEABLE LOW OUTPUT SPEED FACE MOVEABLE TRAVELS FACE DRIVEN PULLEY

LOW ENGINE RPM DRIVEN PULLEY NEUTRAL LOW HIGH SPEED SPEED MOVEABLE FACE DRIVE PULLEY HIGH OUTPUT SPEED Figure 25. Pulley Conditions

HIGH ENGINE RPM Condition A: DRIVEN PULLEY „„Engine Idling Figure 23. Pulley Interaction „„Drive Pulley: Small The “Variable Pitch Pulleys” have one fixed face, and one „„Belt: Loose and Stationary moveable face. The drive pulley (Figure 24) moveable face is controlled by roller weight arms and springs, which Condition B: change position according to engine speed. The driven „„Engine Accelerating pulley moveable face is controlled by a spring and belt tension. „„Drive Pulley: Small But Increasing DRIVE „„Driven Pulley: Large But Decreasing PULLEY „„Belt: Approaching Tightness BUSHING Condition C: RAMP PLATE „„Engine At High Speed SPRING „„Drive Pulley: Large „„Driven Pulley: Small „„Belt: Tight ROLLER ARM WEIGHT Figure 24. Variable Pitch Pulley

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 31 maintenance (old style clutch) Clutch This clutch system provides a high pulley ratio (a low gear- so to speak) to start out and a low pulley ratio ( a high gear- so to speak) for a high speed operation, with infinite variation between the two. This means that it will not be necessary to give full throttle in order to “break the blades/pans loose”. The machine can slowly be brought up to speed. The torque sensitive pulley (Figure 26) utilizes a spring and cam bracket. Peak performance results from proper interaction between the driven pulley spring and the ramp angle of the cam bracket.

SPRING DRIVEN CAM PULLEY BRACKET FIXED MOVEABLE FACE FACE Figure 26. Pulley Spring and Cam Bracket

NOTICE If replacement of the clutch is required, use clutch replacement kit, P/N 22581, to upgrade to Multi-Clutch system. New style drive assembly must be installed per instruction sheet, P/N 23444, included with clutch replacement kit. Old style Comet clutch is no longer available. Multi-Clutch components are not interchangeable with the prior Hoffco Comet drive system. The Hoffco Comet CVT system must be replaced for combatibility with the new equipment.

page 32 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) maintenance (new style clutch)

NOTICE belt measurement This section is intended to aid users in the maintenance Long life can be expected with this new drive assembly as of drive assemblies with a new style Multi-Clutch. long as the belt is kept properly aligned. The clutch will not shift correctly if the belt width is below Checking The Drive Belt 1.14". Measure the CVT belt every 100 hours of use to make sure it is within the specified tolerance. See Figure 27. The drive belt needs to be changed as soon as it begins to show signs of wear. DO NOT reuse a belt under any CVT BELT circumstances. Indications of excessive belt wear are fraying, squealing when in use, belts that emit smoke or a burning rubber smell when in use. To gain access to the drive belt, remove the drive belt guard cover, then visually inspect the drive belt for signs CALIPERS of damage or excessive wear. If the drive belt is worn or damaged, replace the drive belt.

WARNING DO NOT attempt to insert hands or tools into the belt area while the engine is running and the safety guard has been removed. Keep fingers, hands, hair and clothing away from all moving parts to prevent bodily injury. Figure 27. Belt Measurement

WARNING DO NOT remove the V-belt guard cover until the muffler has cooled. Allow the entire trowel to cool down before performing this procedure.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 33 maintenance (new style clutch) Removing the Drive Belt 1. Remove Drive Belt Cover. See Figure 16. CVT BELT 2. Disconnect the left-side CV Axle from the left-side gearbox (P/N 23365) and the lower drive pulley coupler. See Figure 28. NOTICE Note that the 3 bolts securing the CV axle to the coupler are shorter than those securing the CV axle to the PULL UPWARDS AND TOWARDS gearbox. Remember bolt orientation for reassembly. REAR OF TROWEL

UPPER DRIVE PULLEY/CLUTCH FIXED FACE

MOVEABLE LOWER CVT FACE PULLEY BELT

LEFT-SIDE SHORTER Figure 29. Holding Lower Pulley Open GEARBOX SCREWS (3) 2. Place free end of CVT belt into upper pulley grooves.

COUPLER LOWER CLUTCH DRIVE CV AXLE PULLEY

GEARBOX COUPLER

Figure 28. Remove Left-Side CV Axle UPPER 3. If the belt is not being reused (recommended), CUT PULLEY the drive belt. Ensure all belt remnants are removed from the pulleys. Installing Drive Belt 1. Place new CVT belt over the lower pulley. Squeeze the belt Figure 299) and pull the belt upwards and towards the rear of the trowel. This will spread open the faces of the lower drive pulley. LOWER PULLEY

Figure 30. Upper Pulley Belt Installation 3. Reconnect left-side CV Axle Assembly. to the left side gearbox and lower drive pulley coupler. See Figure 28.

page 34 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) maintenance (new style clutch) how it works The Multi-Clutch functions much like a standard CVT system. As the engine RPM’s increase, the drive or primary clutch closes, forcing the belt to ride outwards on the drive sheaves. The closing of the drive clutch also forces the belt to open the driven or secondary sheaves. The opening and closing of these sheaves creates a ratio variation… hence CVT or Continuously Variable Transmission. Belt protection is achieved within the Multi-Clutch through the use of a series of centrifugal clutches. While most CVT systems have a loose or slack belt while the engine idles, the sheaves of those systems are constantly rotating and wearing on the belt. Those systems also require the stationary belt to be pinched by the constantly rotating sheaves during startup. The relative rotation of the sheaves to the belt causes unnecessary wear on the belt. With traditional CVT systems, wear on the belt happens any time the engine is idling and at every start up of the driven equipment. This is where the Multi-Clutch differs from the other CVT’s. The Multi-Clutch utilizes two centrifugal clutches (the starter clutch system) to drive the sheaves of the drive (primary) clutch. What that means is that the belt can remain tight in the sheaves, and that both the sheaves and the belt are stationary while the vehicle is idling. This eliminates the belt wear at an idle, and during start up, while also providing one additional form of belt protection. The centrifugal clutches (starter clutch) can act as overload protection as well. In cases where too much torque is trying to be transmitted to the belt, the centrifugals can slip before the maximum load on the belt is achieved. What this means is that instead of the belt slipping on the sheaves during an overload, the centrifugals will first slip further protecting the belt from damage.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 35 maintenance Blade Pitch Blade Pitch Adjustment Procedure Matching Blade Pitch for Both Sets of Blades Maintenance adjustment of blade pitch is made by adjusting Sometimes it may be necessary to match blade pitch between a bolt (Figure 32) on the arm of the trowel blade finger. the two sets of blades. There are some signs that this may be This bolt is the contact point of the trowel arm to the lower necessary. For example, the differences in pitch could cause wear plate on the thrust collar. The goal of adjustment is to a noticeable difference in finish quality between the two sets promote consistent blade pitch and finishing quality. of blades. Or, the difference in blade pitch could make the Look for the following indications if blades are wearing machine difficult to control. This is due to the surface area in unevenly. If so, adjustment may be necessary. contact with the concrete (the blade set with the greater contact area tends to stick to the concrete more). „„Is one blade completely worn out while the others look new? Single Pitch™ „„Does the machine have a perceptible rolling or bouncing On a Single Pitch™ trowel each spider assembly can be motion when in use? pitched individually, forcing the operator to constantly make adjustments on each pitch tower. „„Look at the machine while it is running, do the guard rings “rock up and down” relative to the ground? Twin Pitch™ Trowels equipped with Twin Pitch™ controls may need „„Do the pitch control towers rock back and forth? to have blade pitch between the two sets of blades “syncronized”. If the blades need to be syncronized this is SPIDER PLATE easily accomplished by performing the following procedure. Refer to Figure 31. TROWEL LEVER (FINGER) 1. Lift the pitch adjustment handle on either side. Once lifted, that side is now disconnected from the Twin TROWEL ARM Pitch™ system. 2. Adjust to match the opposite side. BLADE PITCH ADJUSTMENT BOLT 3. When adjusted, lower the handle to Twin Pitch™ Figure 32. Blade Pitch Adjustment Bolt operating position. OPERATING POSITION The easiest and most consistent way to make adjustments on the trowel arm fingers is to use the Trowel Arm Adjustment TWIN PITCH™ Fixture (P/N 9177). It comes with all the hardware necessary DISENGAGED (ONE SIDE) to properly accomplish this maintenance and instructions on how to utilize this tool. If a trowel arm adjustment fixture is not available and WHITEMAN

SERIES immediate adjustment is necessary, temporary field adjustment can be made if you can see or feel which blade is pulling harder by adjusting the bolt that corresponds to that blade. A better way to determine which blades need adjustment is to place the machine on a known FLAT surface (steel metal plate) and pitch the blades as flat as possible. Look at the adjustment bolts. They should all barely make contact with the lower wear plate on the spider. If you can see that one of them is not making contact, some adjustment will Figure 31. Pitch Towers be necessary.

page 36 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) maintenance Adjust the “high” bolts down to the level of the one that is not Clean-Up touching, or adjust the “low” bolt up to the level of the higher Never allow concrete to harden on the power trowel. ones. If possible, adjust the low bolt up to the level of the Immediately after use wash any concrete off the trowel rest of the bolts. This is the fastest way, but may not always with water, be careful not to spray a hot engine or muffler. work. Verify after adjustment the blades pitch correctly. An old paint brush or broom may help loosen any concrete Blades that are incorrectly adjusted often will not be able that has started to harden. to pitch flat. This can occur if the adjusting bolts are raised Trowel Arm Adjustment too high. Conversely, adjusting bolts that are too low will not allow the blades to be pitched high enough for finishing Use the following procedure to check and adjust trowel operations. arms, and check for worn or damaged components when it becomes apparent that the trowel is finishing poorly or If, after making Blade Pitch adjustments, the machine is in need of routine maintenance. still finishing poorly, blades, trowel arms, and trowel arm bushings may be suspect and should be looked at for Look for the following indications. Trowel arm alignment, adjustment, wear, or damage. See the following sections. worn spider bushings or bent trowel arms may the cause. „„Are blades wearing unevenly? Is one blade completely Changing Blades worn out while the others look new? It is recommended that ALL the blades on the entire „„Does the machine have a perceptible rolling or bouncing machine are changed at the same time. If only one or motion when in use? some of the blades are changed, the machine will not „„Look at the machine while it is running. Do the guard finish concrete consistently and the machine may wobble rings “rock up and down” relative to the ground? or bounce. 1. Place the trowel in a FLAT, LEVEL area. 1. Place the machine on a flat, level surface. Adjust the blade pitch control to make the blades as flat as NOTICE possible. Note the blade orientation on the trowel arm. A level, clean area to test the trowel prior to and after is This is important for ride-on trowels as the two sets essential. Any unlevel spots in the floor or debris under of blades counter-rotate. Lift the machine up, placing the trowel blades will give an incorrect perception of blocks under the main guard ring to support it. adjustment. Ideally, a 5 x 5 Ft. (1.5 x 1.5 Meter) three- 2. Remove the bolts and lock washers on the trowel arm, quarter inch (19 mm) thick FLAT steel plate should be and then remove the blade. used for testing.

3. Scrape all concrete and debris from the trowel arm. This 2. Pitch the blades as flat as possible. The adjustment is important to properly seat the new blade. bolts should all barely make contact with the lower 4. Install the new blade, maintaining the proper orientation wear plate on the spider. If one is not making contact, for direction of rotation. adjustment will be necessary (Figure 34). 5. Reinstall the bolts and lock washers. 6. Repeat steps 2-5 for all remaining blades. Steering Adjustment The steering assist adjustment should be performed only by qualified service technicians. For HHN34TVD steering adjustment instructions, reference MQ Whiteman service bulletin 200925.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 37 maintenance

Figure 33 illustrates “incorrect alignment,” worn spider bushings or bent trowel arms. Check that the adjustment GEARBOX bolt is barely touching (0.10" max. clearance) lower wear plate. All alignment bolts should be spaced the same distance from the lower wear plate.

ADJUSTMENT BOLT

“DISHED” EFFECT ON LOWER FINISHED WEAR PLATE CONCRETE

SURFACE JAM NUT Figure 33. Incorrect Spider Plate Alignment SET SCREW Figure 34 illustrates the “correct alignment ” for a spider plate (as shipped from the factory). Figure 35. Spider Removal GEARBOX Trowel Blade Removal TROWEL ARM CORRECT Remove the trowel blades by removing the three hex head ALIGNMENT MOUNTING BAR bolts (Figure 36) from the trowel arm. Set blades aside. BLADE

SURFACE Figure 34. Correct Spider Plate Alignment TROWEL HEX HEAD ARM BOLT

Spider Removal LOCK Remove the spider assembly from the gearbox shaft as WASHER follows: 1. Locate the cone point square head set screw (Figure 35) and attached jam nut found on the side of the TROWEL spider assembly. BLADE 2. Loosen the jam nut and cone point square head set Figure 36. Trowel Blade Removal screw. 3. Carefully lift the upper trowel assembly off of the spider assembly. A slight tap with a rubber mallet may be necessary to dislodge the spider from the main shaft of the gearbox.

page 38 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) maintenance Trowel arm removal out with the trowel arm, remove the bushing from the trowel arm and set aside in a safe place. If the bushing 1. Remove the hardware securing the stabilizer ring to is retained inside the spider plate, carefully remove the trowel arm. (Figure 37) the bushing. 5. Examine the bronze trowel arm bushing (Figure 37), and clean if necessary. Replace bushing if out-of- round or worn.

BRONZE BUSHING

Figure 39. Bronze Bushings 6. Wire brush any build-up of concrete from all six sides of the trowel arm. Repeat this for the remaining arms. Checking Trowel Arm Straightness Trowel arms can be damaged by rough handling, (such as dropping the trowel on the pad), or by striking exposed Figure 37. Stabilizer Ring plumbing, forms, or rebar while in operation. A bent trowel 2. Each trowel arm is held in place at the spider plate arm will not allow the trowel to operate in a smooth fluid by a hex head bolt (zerk grease fitting) and a roll pin. rotation. If bent trowel arms are suspect, check for flatness Remove both the hex head bolt and the roll pin (Figure as follows, refer to Figures 38 and 39: 38) from the spider plate. Lever Mounting Slot 3. Remove the trowel arm from the spider plate. (Left Arm Shown) Roll Pin Hole Blade Attachment Bolt Hole (1 of 3) SPIDER PLATE Flat of Hexagonal-Shaft (Top of Arm)

Trowel Arm ROLL Round Shaft Section PIN Trowel Arm Hex-Shaft Section Figure 40. Trowel Arm 1. Use a thick steel plate, granite slab or any surface HEX HEAD which is true and flat, to check all six sides of each BOLT trowel arm for flatness. (ZERK FITTING) 2. Check each of the six sides of the trowel arm (hex section). A feeler gauge of .004" (0.10 mm) should not Figure 38. Remove Roll Pin and Zerk Fitting pass between the flat of the trowel arm and the test 4. Should the trowel arm inserts (bronze bushing) come surface along its length on the test surface. (Figure 41 ) .

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 39 maintenance

TROWEL FLAT ARM TEST SURFACE

FEELER GAUGE (.005 in./0.127 mm) FEELER GAUGE (.004 in./0.10 mm) Figure 41. Checking Trowel Arm Flatness 3. Next, check the clearance between the round shaft and the test surface as one of the flat hex sections of the arm rests on the test surface. Rotate the arm to each Figure 43. Trowel Arm Adjustment Setup of the flat hex sections and check the clearance of the 3. Unscrew the locking bolts on the adjustment tool and round shaft. Use a feeler gauge of .005" (0.127 mm). place the trowel arm into the fixture channel as shown Each section should have the same clearance between in Figure 44. A thin shim may be required to cover the the round of the trowel arm shaft and the test surface. blade holes on the trowel arm. Make sure to align the 4. If the trowel arm is found to be uneven or bent, replace trowel adjustment bolt with the fixture adjustment bolt. the trowel arm. TROWEL ARM FIXTURE ARM LEVER ARM ADJUSTMENT Trowel Arm Adjustment BOLT Shown in (Figure 42) is the adjustment fixture with a trowel arm inserted. As each trowel arm is locked into the fixture, SHIM the arm bolt is adjusted to where it contacts a stop on the fixture. This will consistently adjust all of the trowel arms, DISTANCE = .010 in. keeping the finisher as flat and evenly pitched as possible. LOCKING BOLTS ADJUSTMENT 1. Locate the trowel arm adjustment tool P/N 9177. TROWEL ARM ADJUSTMENT BOLT ADJUSTMENT FIXTURE BOLT Figure 44. Trowel Arm Adjustment Fixture Components LOCKING “DISTANCE” NUT 4. Use an allen wrench to tighten the locking bolts FIXTURE securing the trowel arm in place. ARM 5. Adjust the bolt “distance” shown in Figure 44to match SIDE VIEW one of the arms. The other arms will be adjusted to match this distance. Figure 42. Trowel Arm Adjustment Tool Side View 6. Loosen the locking nut on the trowel arm lever, then 2. Ensure the fixture arm is in the proper setting (up or down) turn the trowel arm adjusting bolt until it barely touches for your trowel arm rotation as shown in Figure 43. (.010") the fixture adjusting bolt. NOTICE 7. Once the correct adjustment is made, tighten the lock nut on the trowel arm to lock in place. Arms with CLOCK-WISE blade rotation use the fixture arm in the UP position (Figure 43, A). Arms with COUNTER 8. Loosen locking nuts on the adjustment fixture, and CLOCK-WISE blade rotation use the fixture with the fixture remove trowel arm. arm in the DOWN position (Figure 43, B). 9. Repeat steps for the remaining trowel arms.

page 40 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) maintenance Reassembly 1. Clean and examine the upper/lower wear plates and KNOB, TIE-DOWN thrust collar. Examine the entire spider assembly. Wire Z-CLIP PANS brush any concrete or rust build-up. If any of the spider TIE-DOWN, components are found to be damaged or out of round, BLADE replace them. 2. Make sure that the bronze trowel arm bushing is not damage or out of round. Clean the bushing if necessary. If the bronze bushing is damaged or worn, replace it. Z-CLIP, BLADE PAN ASSEMBLY 3. Reinstall bronze bushing onto trowel arm. 4. Repeat steps 2–3 for each trowel arm. Figure 45. Z-Clip Finisher Pan Installation 5. Make sure that the spring tensioner is in the correct 1. Lift trowel just enough to slide pan under blades. Lower position to exert tension on the trowel arm. finisher onto pan with blades adjacent to Z-Clips. 6. Insert all trowel arms with levers into spider plate (with 2. Rotate blades into position under Z-Clips. Ensure that bronze bushing already installed) using care to align the blades are rotated in the direction of travel when grease hole on bronze bushing with grease hole fitting the machine is in operation or use the engine to rotate on spider plate. the blades into position. 7. Lock trowel arms in place by tightening the hex head 3. Attach the blade tie-downs to the far side of the Z-Clip bolt with zerk grease fitting and jam nut. brackets with tie-down knobs as shown in Figure 45. 8. Re-install the blades onto the trowel arms. 4. Check to make certain that the blade edges are secured under the Z-Clips and the tie-downs are 9. Install stabilizer ring onto spider assembly. secured completely over the edges of the blade bar before the machine is put back into operation. 10. Lubricate all grease points (zerk fittings) with premium “Lithum 12” based grease, conforming to NLG1 Grade Decommissioning Trowel/Components #2 consistency. Decommissioning is a controlled process used to safely Installing Pans Onto Finisher Blades retire a piece of equipment that is no longer serviceable. If the equipment poses an unacceptable and unrepairable These round discs sometimes referred to as "pans" attach safety risk due to wear or damage or is no longer cost to the spiders arms and allow early floating on wet concrete effective to maintain, (beyond life-cycle reliability) and is and easy movement from wet to dry areas. They are also to be decommissioned, (demolition and dismantlement), very effective in embedding large aggregates and surface the following procedure must take place: hardeners. 1. Drain all fluids completely. These may include oil, WARNING gasoline, hydraulic oil and antifreeze. Dispose of DO NOT lift the trowel when the pans are properly in accordance with local and governmental attached. regulations. Never pour on ground or dump down drains or sewers. ALWAYS install pans either on the work area or on an area that is next to and level with 2. Remove battery and bring to appropriate facility for lead the work area. reclamation. Use safety precautions when handling batteries that contain sulfuric acid. Refer to Figure 43 when installing pans onto finisher blades. 3. The remainder can be brought to a salvage yard or metal reclamation facility for further dismantling.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 41 troubleshooting

Troubleshooting (Ride-On mechanical Trowel) symptom possible problem solution Make sure that the stop switch is functioning when the Stop switch malfunction? operator is seated. Replace switch if necessary. Look at the fuel system. Make sure there is fuel being Engine running rough or not at all. Fuel? supplied to the engine. Check to ensure that the fuel fi lter is not clogged. Check to ensure that the ignition switch has power and Ignition? is functioning correctly. Bad contacts? Replace switch. Safety stop switch not functioning. Loose wire connections? Check wiring. Replace as necessary. Other problems? Consult engine manufacturer’s manual. Make sure blades are in good condition, not excessively worn. Finish blades should measure no less than 2 inches (50mm) from the blade bar to the trailing edge, Blades? combo blades should measure no less that 3.5 inches (89mm). Trailing edge of blade should be straight and parallel to the blade bar. Check that all blades are set at the same pitch angle as measured at the spider. A fi eld adjustment tool Pitch Adjustment? is available for height adjustment of the trowel arms (contact Parts Department). Check the spider assembly for bent trowel arms. If one Bent trowel arms? of the arms is even slightly bent, replace it immediately. Trowel bounces, rolls concrete, or makes uneven Check the trowel arm bushings for tightness. This can swirls in concrete. be done by moving the trowel arms up and down. If Trowel arm bushings? there is more than 1/8 inch (3.2 mm) of travel at the tip of the arm, the bushings should be replaced. All bushings should be replaced at the same time. Check the fl atness of the thrust collar by rotating it on Thrust collar? the spider. If it varies by more than 0.02 inch (0.5 mm) replace the thrust collar. Check the thrust collar by rocking it on the spider. If it can tilt more than 1/16 inch (1.6 mm) - as measured at Thrust collar bushing? the thrust collar O.D., replace the bushing in the thrust collar. Check the thrust bearing to see that it is spinning freely. Thrust bearing worn? Replace if necessary. The main output shaft of the gearbox assembly should be checked for straightness. The main shaft must run Main shaft? straight and cannot be more than 0.003 inch (0.08 mm) out of round at the spider attachment point. Machine has a perceptible rolling motion while Check to make sure that both fi ngers of the yoke press running. Yoke? evenly on the wear cap. Replace yoke as necessary. Check to ensure that each blade is adjusted to have the Blade Pitch? same pitch as all other blades. Adjust per maintenance section in manual.

page 42 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) troubleshooting

Troubleshooting (Ride-On mechanical Trowel) - continued symptom possible problem solution Check all electrical connections in the lighting circuit. Wiring? Verify wiring is in good condition with no shorts. Replace defective wiring or components immediately. If +12VDC is present at light fi xture connector when light Lights (optional) not working. Lights? switch is activated and light does not turn on, replace light bulb. Check the continuity of light switch. Replace light switch Bad switch? if defective. Bad fuse? Check fuse. Replace fuse if defective. Retardant? Check retardant level in tank. Fill tank as required. Check all electrical connections in the spray pump Wiring? circuit. Verify wiring is in good condition with no shorts. Replace defective wiring or components immediately. Check the continuity of both left and right spray switches Retardant spray (optional) not working. Bad switch? (palm handles). Replace spray switch if defective.. If +12VDC is present at pump connector when spray Bad spray pump? switch is activated and pump does not operate, replace spray pump. Bad fuse? Check fuse. Replace fuse if defective. Blade speed out of adjustment? See section on blade speed adjustment. Adjust the connecting linkage found at the base of the Steering linkage out of adjustment? handle. Contact your MQ fi eld service manager for Steering is unresponsive. instructions. Check for wear of steering bearings and linkage Worn components? components. Replace if necessary. Operating position is uncomfortable. Seat adjusted for operator? Adjust seat with lever located on the front of the seat. If the motor runs and the pitch is not affected, parts Broken or loose parts? inside the power head may be loose or broken. Return power head to dealer for service. Check all electrical connections and wiring. Check the Power head on Electric Pitch (optional) not continuity at the power head unit. Verify that there is working. Wiring? voltage present at the power head switch with the key switch in the “on” position. Check the continuity of the switch. If switch is Switch? malfunctioning, replace immediately. Make sure that both crank handles are pushed down as Crank handles? Linkage on Twin Pitch not working. far as possible to ensure that the linkage is engaged. Broken part? Replace all broken parts immediately.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 43 troubleshooting

Troubleshooting (engine) symptom possible problem solution Spark plug bridging? Check gap, insulation or replace spark plug. Carbon deposit on spark plug? Clean or replace spark plug. Short circuit due to defi cient spark plug Check spark plug insulation, replace if worn. insulation? Improper spark plug gap? Set to proper gap. Fuel reaching carburetor? Check fuel line. Water in fuel tank? Flush or replace fuel tank. Fuel fi lter clogged? Replace fuel fi lter. Stuck carburetor? Check fl oat mechanism. Diffi cult to start, fuel is available, but no spark at spark plug. Spark plug is red? Check transistor ignition unit. If insuffi cient compression, repair or replace Spark plug is bluish white? engine. If injected air leaking, correct leak. If carburetor jets clogged, clean carburetor. Check transistor ignition unit is broken, and replace defective unit. Check if voltage cord No spark present at tip of spark plug? cracked or broken and replace. Check if spark plug if fouled and replace. No oil? Add oil as required. Oil pressure alarm lamp blinks upon starting? Check automatic shutdown circuit, "oil (if applicable) sensor". (if applicable) ON/OFF switch is shorted? Check switch wiring, replace switch. Ignition coil defective? Replace ignition coil. Diffi cult to start, fuel is available, and spark is Improper spark gap, points dirty? Set correct spark gap and clean points. present at the spark plug. Condenser insulation worn or short circuiting? Replace condenser. Spark plug wire broken or short circuiting? Replace defective spark plug wiring. Flush fuel system, and replace with correct Wrong fuel type? type of fuel. Diffi cult to start, fuel is available, spark is Water or dust in fuel system? Flush fuel system. present and compression is normal. Air cleaner dirty? Clean or replace air cleaner. Choke open? Close choke. Suction/exhaust valve stuck or protruded? Reseat valves. Piston ring and/or cylinder worn? Replace piston rings and/or piston. Diffi cult to start, fuel is available, spark is Cylinder head and/or spark plug not tightened Torque cylinder head bolts and spark plug. present and compression is low. properly? Head gasket and/or spark plug gasket Replace head and spark plug gaskets. damaged? No fuel in fuel tank? Fill with correct type of fuel. Apply lubricant to loosen fuel cock lever, Fuel cock does not open properly? replace if necessary. No fuel present at carburetor. Fuel fi lter/lines clogged? Replace fuel fi lter. Fuel tank cap breather hole clogged? Clean or replace fuel tank cap. Air in fuel line? Bleed fuel line.

page 44 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) troubleshooting

Troubleshooting (engine) - continued symptom possible problem solution Air cleaner dirty? Clean or replace air cleaner. Weak in power, compression is proper and Improper level in carburetor? Check fl oat adjustment, rebuild carburetor. does not misfi re. Defective spark plug? Clean or replace spark plug. Improper spark plug? Set to proper gap. Flush fuel system and replace with correct Water in fuel system? Weak in power, compression is proper but type of fuel. misfi res. Dirty spark plug? Clean or replace spark plug. Ignition coil defective? Replace ignition coil. Spark plug heat value incorrect? Replace with correct type of spark plug. Wrong type of fuel? Replace with correct type of fuel. Cooling fi ns dirty? Clean cooling fi ns. Engine overheats. Clear intake of dirt and debris. Replace air Intake air restricted? cleaner elements as necessary. Oil level too low or too high? Adjust oil to proper level. Governor adjusted incorrectly? Adjust governor. Rotational speed fl uctuates. Governor spring defective? Replace governor spring. Fuel fl ow restricted? Check entire fuel system for leaks or clogs. Recoil mechanism clogged with dust and Clean recoil assembly with soap and water. Recoil starter malfunctions. (if applicable) dirt? Spiral spring loose? Replace spiral spring. Ensure tight, clean connections on battery Loose, damaged wiring? and starter. Starter malfunctions. Battery insuffi ciently charged? Recharge or replace battery. Starter damaged or internally shorted? Replace starter. Check and clean valves. Check muffl er and Over-accumulation of exhaust products? replace if necessary. Burns too much fuel. Replace spark plug with manufacturer's Wrong spark plug? suggested type. Lubricating oil is wrong viscosity? Replace lubricating oil with correct viscosity. Exhaust color is continuously "white". Worn rings? Replace rings. Air cleaner clogged? Clean or replace air cleaner. Choke valve set to incorrect position? Adjust choke valve to correct position. Carburetor defective, seal on carburetor Exhaust color is continuously "black". Replace carburetor or seal. broken? Poor carburetor adjustment, engine runs too Adjust carburetor. rich? ON/OFF device not activated ON? Turn on ON/OFF device. Will not start, no power with key "ON". (if Check cable connections. Charge or replace Battery disconnected or discharged? applicable) battery Ignition switch/wiring defective? Replace ignition switch. Check wiring.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 45 wiring diagram WHITE 12 AWG STRIP TERMINAL

P/N 19301 P/N 11867 P/N 11864

WHITE 12 AWG

B

R O

SWITCH IGNITION W BREAKER CIRCUIT 30 AMP

BREAKER CIRCUIT 40 AMP N

MODULE CONTROL IGNITION

1

2

A W

WHITE WIRE JUMPERS G

WHITE 10 AWG

W

W

H H

RED 10 AWG

IT

IT

E

E

1

1

0

0

A

A

W

W

G G BLK I B A K E RED 16 AWG RED 16 AWG GROUND CHASSIS CONNECT TO I WHITE 12 AWG C D J F G YEL 14 AWG ACCESSORY SOLENOID P/N 11863 BLK E1 GREEN 12 AWG BLUE 12 AWG GOLD 12 AWG BROWN 12 AWG PURPLE 12 AWG LIGHT GREEN 12 AWG BLK LIGHT SWITCH E3 P/N 11866 GROUND CHASSIS CONNECT TO WHITE 12 AWG S

BLUE 16 AWG

W

H IT WHT

BLK E

NC

1

2

A W

WHITE 12 AWG G P/N 11862 PUMP FUEL E2 P3 GROUND CHASSIS CONNECT TO BLK SENSOR OIL PRESSURE P1 KILL SWITCH P11 P14 RED OIL SILVER WHITE 12 AWG BLK STATUS INDICATOR LIGHTS P4 14 AWG P2 BLK NC BLUE SENSOR WATER TEMP. WATER RED P15 P12 0RANGE BLK P6 P5 YL WHITE 12 AWG BLK BLUE RETARDANT SPRAY RED CHG RED P16 P13 SWITCHES BLK P6 P5 YL RED LIGHT GREEN PURPLE WHITE GOLD FRAME HARNESS P/N 2775 WIRING 16 AWG LIGHT BLUE MAIN ENGINE WIRING HARNESS P/N 11373 + + + RED 10 AWG RED COIL COIL BLUE COIL GREEN WHITE 10 AWG BLUE 16 AWG BLUE 16 AWG IGNITION WHT WHT BLK BLK LAMP WHT WHT BLK BLK BLK BLK P9 P10 P21 P18 P17 P20 GREEN BLUE ALTERNATOR RED P27 P26 P24 P23 STARTER RED POSITIVE HOUR METER BLK BLK BLK BLK BLK BLK BLK BLK BATTERY 12V DC SENSOR POSITION ENGINE HALL EFFECT MOTOR MOTOR SPRAY SPRAY BLK NEGATIVE #1 #2 GROUND ENGINE CONNECT TO E2 GROUND CHASSIS CONNECT TO BLK LIGHTS LIGHTS

page 46 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) notes

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 47 Explanation of Code in Remarks Column The following section explains the different symbols and qTy. Column remarks used in the Parts section of this manual. Use the help numbers found on the back page of the manual if there Numbers used — Item quantity can be indicated by a are any questions. number, a blank entry, or A/R. NOTICE A/R (As Required) is generally used for hoses or other parts that are sold in bulk and cut to length. The contents and part numbers listed in the parts section are subject to change without notice. Multiquip A blank entry generally indicates that the item is not sold does not guarantee the availability of the parts listed. separately. Other entries will be clarifi ed in the “Remarks” Column. sampLe paRTs LIsT RemaRKs Column NO. paRT NO. paRT Name qTy. RemaRKs Some of the most common notes found in the “Remarks” 1 12345 BOLT ...... 1 .....INCLUDES ITEMS W/% 2% WASHER, 1/4 IN...... NOT SOLD SEPARATELY Column are listed below. Other additional notes needed 2% 12347 WASHER, 3/8 IN. ...1 .....MQ-45T ONLY to describe the item can also be shown. 3 12348 HOSE ...... A/R ...MAKE LOCALLY 4 12349 BEARING ...... 1 .....S/N 2345B AND ABOVE assembly/Kit — All items on the parts list with the same unique symbol will be included when this item is NO. Column purchased. unique symbols — All items with same unique Indicated by: symbol “INCLUDES ITEMS W/(unique symbol)” (@, #, +, %, or >) in the number column belong to the serial Number Break — Used to list an effective serial same assembly or kit, which is indicated by a note in the number range where a particular part is used. “Remarks” column. Indicated by: Duplicate Item Numbers — Duplicate numbers indicate “S/N XXXXX AND BELOW” multiple part numbers, which are in effect for the same “S/N XXXX AND ABOVE” general item, such as different size saw blade guards in “S/N XXXX TO S/N XXX” use or a part that has been updated on newer versions of the same machine. specifi c model Number use— Indicates that the part is used only with the specifi c model number or model NOTICE number variant listed. It can also be used to show a When ordering a part that has more than one item part is NOT used on a specifi c model or model number number listed, check the remarks column for help in variant. determining the proper part to order. Indicated by: paRT NO. Column “XXXXX ONLY” “NOT USED ON XXXX” Numbers used — Part numbers can be indicated by a “make/Obtain Locally” — Indicates that the part can number, a blank entry, or TBD. be purchased at any hardware shop or made out of TBD (To Be Determined) is generally used to show a available items. Examples include battery cables, shims, part that has not been assigned a formal part number and certain washers and nuts. at the time of publication. “Not sold separately” — Indicates that an item cannot A blank entry generally indicates that the item is not sold be purchased as a separate item and is either part of an separately or is not sold by Multiquip. Other entries will assembly/kit that can be purchased, or is not available be clarifi ed in the “Remarks” Column. for sale through Multiquip.

page 48 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) Suggested Spare Parts

hhn31v ride-on power trowel with vanguard dm950 engine 1 to 3 units

Qty. p/N Description Qty. p/N Description 4...... 0189...... HANDLE GRIP 1...... 2673...... CIRCUIT BREAKER 30 AMP, 12V 4...... 2267...... HANDLE GRIP (RIGHT SIDE) 2...... 4682...... TOGGLE SWITCH 1...... 11430...... SWITCH 2...... 8381...... BOOT, TOGGLE SWITCH 2...... 12460...... CABLE, PITCH 1...... 11792...... ACCESSORY SOLENOID 1...... 1617...... LEVER ASSY. TROWEL 4...... 11078...... KEYS, IGNITION (SWITCH) ...... ADJUSTMENT 2...... 2655...... HOUR METER 2...... 2737...... KNOB ASSY. 2...... 9005...... LEVER TROWEL ARM (L.S.) 1...... 10208...... MUFFLER W/CLAMP 20...... 0166A...... WASHER 1...... 10434...... CLAMP 20...... 1876...... JAM NUT 1...... 10463...... CLAMP 20...... 0164B...... SCREW 4...... 10937...... BELT (B-37) 5...... 11039...... BUSHING 1...... 11771...... BRACKET ENGINE THROTTLE 2...... 9111...... SPRING (L.S.) ...... CABLE 20...... 1875...... WASHER 1...... 12168...... HEADER PIPE 20...... 1322...... SCREW ASSY., ARM RETAINING 1...... 2124...... THROTTLE CABLE 2...... 12611...... SPIDER PLATE 5...... 2829...... ARMS 20...... 1162A...... CAP GREASE FITTING 2...... 2124...... CABLE THROTTLE (RT) 20...... 16602...... SCREW (HHC 3/8 -16 X 3/8) 10...... 10031...... WASHER 1/4 IN. 20...... 1456...... NUT (3/8 -16) 2...... 11692...... BRACKET BATTERY 20...... 12097...... SCREW (SQH 3/8-16 X 1 3/4 2...... 11693...... BOLT BATTERY ...... CONE) 6...... 2509...... WING NUT 2...... 2143...... SPRING (R.S.) 2...... 12548...... SPRAY PUMP 2...... 1986...... LEVER TROWEL ARM (R.S.) 2...... 2108...... CAP SPRAY TANK 2...... 12005...... SAFETY KILL SWITCH 2...... 10958...... SWITCH, IGNITION 20...... 0181B...... WASHER 1/4 IN 1...... 19301...... TERMINAL STRIP (10-POLE) 2...... 11418...... FUEL CAP/GUAGE 1...... 2580...... CHOKE CABLE 20...... 4514...... SCREW (HHC 1/4-20 X 5/8)

NOTICE Part numbers on this Suggested Spare Parts list may supersede/replace the part numbers shown in the following parts lists.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 49 nameplates and decals

5 6

4 4 3 7 3 2 2 11 8 1 1 HHN SERIES

4 4

D OW ER P

C O AT ED

10 9

15

13 13 12

RETARDANT ONLY 12 14

page 50 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) nameplates and decals

NO. PART NO. PART NAME QTY. REMARKS 1 11246 DECAL: LIFT...... 2...... PART OF DECAL KIT12620 2 1499 DECAL: MQ WHITEMAN (RED/TOWER) 2 3 2634 DECAL: DANGER (COMPRESSION) 2 4 11246 DECAL: LUBRICATION...... 4...... PART OF DECAL KIT12620 5 12571 DECAL: OPERATING LIGHTS 1 6 11247 DECAL: HELMET, HAND AND FOOT...... 1...... PART OF DECAL KIT12620 7 11246 DECAL: RADIATING HEAT...... 1...... PART OF DECAL KIT12620 8 20198 DECAL: HHN SERIES 1 9 13118 DECAL: POWDER COATED 1 10 10818 DECAL: MQ WHITEMAN (WHITE/PANEL) 1 11 DECAL: NAME PLATE...... 1...... CONTACT MQ SERVICE DEPT ...... W/ MODEL & S/N 12 11246 DECAL: CHECK HYDRAULIC OIL...... 2...... PART OF DECAL KIT12620 13 11246 DECAL: GEAR DRIVE...... 2...... PART OF DECAL KIT12620 14 11246 DECAL: BELT DRIVE...... 1...... PART OF DECAL KIT12620 15 22088 DECAL, "ENGINE FUEL ONLY" 1

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 51 pivot/gearbox (right side) assy.

VIEW FROM OPERATOR’S SEAT

1

2

DER W O P

D E C O AT

3 1

5

4

1 3 5 6 4

8

RIGHT-SIDE 9 GEARBOX

NOTES: SCREWS ARE PART OF RIGHT-SIDE GEARBOX 1 ASSEMBLY. TO ORDER SCREWS USE P/N 9154

page 52 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) pivot/gearbox (right side) assy.

NO. PART NO. PART NAME QTY. REMARKS 1 1023 SCREW, HHC 3/8 -16 X 1-1/4 8 2 0166A WASHER, LOCK 3/8 MED 8 3 9154 SCREW...... 4...... PART OF GEARBOX 4 12713 ROCKER BLOCK 2 5 12725 BLOCK, ROCKER 2 6 12716 TRUNNION W/A 1 7 12704 GEARBOX, COMPLETE 1 8 12859 PLATE G.B. SPACER 1 9 12856 BRACKET, DIRECTION CONTROL 1

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 53 pivot/gearbox (left side) assy.

1 VIEW FROM OPERATOR’S SEAT 2

DER W O P

D E C O AT

1

3 1 3 1 5

4

1 3 5

6 8 NOTES: LEFT-SIDE GEARBOX SCREWS ARE PART OF 1 9 2 LEFT-SIDE GEARBOX ASSEMBLY. TO ORDER SCREWS USE P/N 9154. 10 2 USE ITEMS 9, 10 AND 11 2 TO MOUNT RIGHT-SIDE GEARBOX.

2 11 page 54 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) pivot/gearbox (left side) assy.

NO. PART NO. PART NAME QTY. REMARKS 1 1023 SCREW, HHC 3/8 -16 X 1-1/4 8 2 0166A WASHER, LOCK 3/8 MED 8 3 9154 SCREW...... 4...... PART OF GEARBOX 4 12719 PIVOT, GEAR BOX W/A 1 5 12725 BLOCK, ROCKER 2 6 12859 PLATE G.B. SPACER 1 7 12703 GEARBOX, COMPLETE 1 8 12856 BRACKET, DIRECTION CONTROL 1 9 0176 NUT, NYLOC 1/2-13...... 2...... USE ON RS GEARBOX 10 0447 WASHER, FLAT 1/2 SAE...... 2...... USE ON RS GEARBOX 11 2549 SCREW, HHC 1/2-13 X3...... 2...... USE ON RS GEARBOX

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 55 gearbox assy.

31 21 35 11 3 1

45 30 4 20 3 29 1 39 17 24 15 5 46 36 32 9 14 7 28 20 13 44 30 4 23 42 21 40 31 4 2

BEARING KIT 10 24 41 25 3

18 6 26 22

32 43 16 38 1 8 33 2 4 18 37 27

24 USE SILICONE SEALANT 43 12 1 UNDER RETAINER; LOCTITE #30518. 19 2 TORQUE TO 30 FT-LBS. USE SILICONE SEALANT 3 AT SPLICE; LOCTITE #30518. 2 BEARING CONE FOR OLD STYLE 4 GEARBOX IS NOT INCLUDED IN KIT. 4 19 page 56 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) gearbox assy.

NO. PART NO. PART NAME QTY. REMARKS 1+$ 0166 A WASHER, LOCK 3/8 MED 16 1,$ 10136 WASHER, FLAT SAE 3/8 16 2+$ 0181 B WASHER, LOCK 1/4 MED 8 2,$ 0948 WASHER, FLAT SAE 1/4 8 3+$ 0205 SCREW, HHC 3/8-16 X 1 8 3,$ 0205 SCREW, HHC 3/8-16 X 1 16 4+$ 0730 SCREW, HHC 1/4-20 X 1 8 4,$ 2295 SCREW, HHC 1/4-20 X 7/8 8 5+$ 10136 WASHER, FLAT, 3/8 SAE 8 6$ 11584 SIGHT GLASS, 3/4 MALE PIPE 1 7$ 11682 FITTING, PLUG, 1/8 MP SQ HEAD 1 8+$ 12599 GEARBOX HOUSING 1 8,$ 21812 GEARBOX HOUSING 1 9+$ 12600 COVER, GEAR BOX 1 9,$ 21811 COVER, GEAR BOX 1 10+$ 12601 CAP, GEARBOX INPUT 1 10,$ 21813 CAP, HELICAL GEARBOX INPUT 1 11+$ 12602 CAP, GEARBOX IDLER 2 11,$ 21810 CAP, HELICAL GEARBOX IDLER 2 12$% 21809 HUB, INPUT SHAFT 1 13$+ 21808 GEAR, 85T HELICAL 1 14$@ 21807 PINION, 17T HELICAL 1 15$@ 21806 GEAR, 60T HELICAL 1 16$% 21805 PINION, 15T BEVEL 1 17$+ 21804 SHAFT, OUTPUT 1 18+ 12691 BEARING, CONE TIMKEN #M84249 2 18,$% 21803 BEARING, CONE SKF 32305 J2 2 19+ 12692 BEARING, CUP TIMKEN #M84210 2 20+ 12693 BEARING, CONE TIMKEN #2793 2 20,$@ 21802 BEARING, CONE SKF 32307 J2 2 21+ 12694 BEARING, CUP TIMKEN #2729 2 22$% 12696 COUPLER, GEARBOX 1 23$ 12697 PIN, DOWEL 0.375/.3752 X 3/4 2 24$%# 12698 O RING, SIZE - 151 BUNA N 4

NOTICE + S/N BI0203468 AND BELOW , BI0203469 AND ABOVE, AND S/N BH0203412

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 57 gearbox assy.

31 21 35 11 3 1

45 30 4 20 3 29 1 39 17 24 15 5 46 36 32 9 14 7 28 20 13 44 30 4 23 42 21 40 31 4 2

BEARING KIT 10 24 41 25 3

18 6 26 22

32 43 16 38 1 8 33 2 4 18 37 27

24 USE SILICONE SEALANT 43 12 1 UNDER RETAINER; LOCTITE #30518. 19 2 TORQUE TO 30 FT-LBS. USE SILICONE SEALANT 3 AT SPLICE; LOCTITE #30518. 2 BEARING CONE FOR OLD STYLE 4 GEARBOX IS NOT INCLUDED IN KIT. 4 19 page 58 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) gearbox assy.

NO. PART NO. PART NAME QTY. REMARKS 25$# 12700 SEAL, CASE 0-RING HHN 0.103 X 46. 38 1 26$%# 12701 SEAL, NATIONAL #471424 1 27$# 12702 SEAL, NATIONAL #470682 1 28$@ 12735 KEY, 3/8 X 3/4 1 29$+ 12736 KEY, HARDENED 3/8 X 1-1/2 1 30+ 12796 BEARING, CONE TIMKEN #26882 2 30,$+ 21801 BEARING, CONE SKF 33109 Q 2 31+ 12797 BEARING, CUP TIMKEN #26823 2 32+$ 20932 SHIM, INPUT. 0.002 THICK 3 32,$ 21800 SHIM, INPUT. 0.002 THICK 3 33$% 1313 SCREW, FHSC 3/8 - 24 X 3/4 PLAIN 1 34$% 26034 KEY, 3/16 X 17/32 1 35+$ 4196 SCREW, HHC 3/8 - 16 X 3/4 8 36$ 911064 FITTING, PLUG 1/2 MP SQ HEAD 1 37$ 911329 FITTING, PLUG 3/8 MP MAGNETIC 2 38$% 9120 RETAINER, DRIVEN PULLEY 1 39$ 9154 SCREW, HHC 3/8 - 16 X 1-3/4 4 40+ 20933 KIT, BEARING/SEAL HHN HELICAL...... 1...... INCLUDES ITEMS W/ # 41 21854 GEARBOX ASSY., RIGHT...... 1...... INCLUDES ITEMS W/ $ 42 21853 GEARBOX ASSY., LEFT...... 1...... INCLUDES ITEMS W/ $ 43 21853854INPUT KIT, INPUT PINION/HUB/COUPLER...... 1...... INCLUDES ITEMS W/ % 44 21853854INTER KIT, INTER PINION/GEAR...... 1...... INCLUDES ITEMS W/@ 45 21853854OUTER KIT, OUTPUT SHAFT/GEAR...... 1...... INCLUDES ITEMS W/ + 46,$ 12687 KEY, 3/8 SQ X 2 1

NOTICE + S/N BI0203468 AND BELOW , BI0203469 AND ABOVE, AND S/N BH0203412

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 59 control steering (assist) 1 assy.

RIGHT & LEFT STEERING CONTROLS FROM OPERATORíS SEAT

LEFT-SIDE 16 GEARBOX 34

22 19 15 3 36 9

10 11 8

10

7

3 8 15 1 6 DETAIL A 1 1 19 3 21 13 26 7 25 13 36 19 3 6 15 9 3 15 36 36

19 16 9 9 RIGHT-SIDE GEARBOX 15 19

36

NOTES: 16 36 SEE DETAIL A ON 9 CONTROL STEERING 3 1 (ASSIST) 2 ASSY. 3 CONNECT TO LOWER RIGHT HANDLE ASSY. page 60 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) control steering (assist) 1 assy.

NO. PART NO. PART NAME QTY. REMARKS 1 0131 A SCREW, HHC 1/4-20 X 3/4 12 3 0447 WASHER, FLAT, 1/2 SAE 12 6 10024 NUT, NYLOC 1/4-20 16 7 10133 NUT, NYLOC 3/8-16 8 8 10136 WASHER, FLAT,3/8 SAE 16 9 10176 NUT, NYLOC 1/2-13 13 10 1023 SCREW, HHC 3/8-16 X 1 1/4 8 11 11127 LEVER, STEERING CONTROL W/A 2 13 11139 BEARING, FLANGE HOUSING 40M-2 6 14 11141 SPACER, ROD END 5 15 11142 ROD END, 1/2-20 MALE RH 9 16 11143 ROD END, 1/2-20 FEMALE RH 7 19 11146 NUT, HEX JAM 1/2-20 11 21 11150 BEARING, SB-201-8 6 22 11170 SCREW, HHC 1/2-20 X 1.1/2” 2 25 11205 ROD, L/R MOTION 1 26 12193 LEVER, L/R CONTROL W/A 1 34 5054 A WASHER, LOCK, 1/2 MED. 2 36 6159 A SCREW, HHC 1/2-13 X 2 13

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 61 control steering (assist) 2 assy.

RIGHT & LEFT STEERING CONTROLS FROM OPERATORíS SEAT RIGHT LEFT

2

24 38 38 34

22

35

19 9 3 32 15 36 27 32 36

29

33 37 30 4 5

31 20 28 12

12 5 30 4 37 14

16 19 20 LOWER RIGHT HANDLE ASSY. 14

16 23 19

DETAIL A 14 17

NOTES: SEE DETAIL A ON 1 1 CONTROL STEERING (ASSIST) 1 ASSY. 18 page 62 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) control steering (assist) 2 assy.

NO. PART NO. PART NAME QTY. REMARKS 2 2267 GRIP HANDLE, LEFT-RIGHT 2 3 0447 WASHER, FLAT, 1/2 SAE 12 4 0735 BEARING, CONE, TIMKEN #A6075 4 5 0735 A BEARING, CUP, TIMKEN #A6157 4 8 10136 WASHER, FLAT,3/8 SAE 16 9 10176 NUT, NYLOC 1/2-13 13 12 11138 BEARING, P-BLOCK HOUSING 47MPB 4 14 11141 SPACER, ROD END 5 15 11142 ROD END, 1/2-20 MALE RH 9 16 11143 ROD END, 1/2-20 FEMALE RH 7 17 11144 SCREW, SHC 1/2-20 X 2 PLTD 1 18 11145 SCREW. SHC 1/2-20 X 3 PLTD 1 19 11146 NUT, HEX JAM 1/2-20 11 20 11149 BEARING, SB-204-12 4 22 11170 SCREW, HHC 1/2-20 X 1.1/2” 2 23 11173 THREADPIECE, 1/2-20 X 2 PLTD 1 24 11177 HANDLE TUBE, UPPER 2 27 12200 ASSIST ASM, STEERING SPRING 2 28 12904 STEERING CONTROL W/A RS ASSIST 1 29 12903 STEERING CONTROL W/A LS ASSIST 1 30 12425 HANDLE , LOWER W/A 2 31 12426 NUT, SLOTTED 3/4-16 PLATED 2 32 2197 NUT, ACORN 1/4-20 2 33 2219 PIN, COTTER 1/8 X 1 1/2 2 34 5054 A WASHER, LOCK, 1/2 MED. 2 35 5277 SCREW, HHC 1/4-20 X 1 1/2 2 36 6159 A SCREW, HHC 1/2-13 X 2 13 37 8151 WASHER, FLAT, 3/4 SAE 4 38 11430 SWITCH, PUSHBUTTON 1

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 63 TWIN PITCH assy. 1 (LEFT/RIGHT)

LEFT SIDE TWIN PITCH TOWER ASSEMBLY P/N 12386 ITEM 55 (VIEW FROM OPERATOR'S SEAT). 25 1 3 57 3 73 61 6 60 62 23 10 72 58 2 71 29 59 63 2 64 38 4 66 65 15 9 29 34 67 27 70 37 24 30 28 40 34 33 22 20 5

LEFT 36 11 1 7 35 RIGHT 2 69 14

20 LEFT 12 16 8 19 B RIGHT 68 2 26

NOTES: LEVER ASSEMBLY, ITEM 57 13 1 INCLUDES ITEMS WITHIN OUTLINE. A RIGHT SIDE TWIN PITCH ASSEMBLY P/N 12385 ITEM 54 CONTINUED ON CONTINUED ON 2 IS IDENTICAL TO LEFT SIDE TWIN PITCH ASSY. 2 TWIN PITCH ASSY. 2 TWIN PITCH ASSEMBLY UNLESS SEE A , ITEM 32. SEE B , ITEM 31. OTHERWISE NOTED. KNOB KIT P/N 2737 (ITEM 73) 3 INCLUDES ITEMS 61, 62, 64 AND 65. page 64 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) TWIN PITCH assy. 1 (LEFT/RIGHT)

NO. PART NO. PART NAME QTY. REMARKS 1+% 0126 B KEY, WOODRUFF #9 1 2+% 0161C WASHER, LOCK 5/16 MED 1 3@+% 0181 B WASHER, LOCK, 1/4 MED 4 4+% 0655 SCREW, HHC 5/16 – 18 X 3/4 1 5+% 0685 SCREW, SHS 5/16 – 18 X 5/16 1 6+% 0948 WASHER, FLAT, 1/4 SAE 1 7+% 10382 BOLT, SHOULDER, 3/8 X 3/8 LONG 1 8+ 10511 SHAFT, PITCH CONTROL, LH TPC...... 1...... LEFT SIDE ONLY 9+% 10512 RING, SNAP, TRUARC 5160 – 75 1 10+% 10546 HOUSING, PITCH CONTROL, 1-3/4 1 11+ 10722 SLIDE BLOCK, LH PITCH CON...... 1...... LEFT SIDE ONLY 12+% 10723 PIN, SPIROL 3/16 X 1 3/8 HD 1 13+% 1116 NUT, BRASS JAM 5/16 – 18 2 14@+% 11583 U-JOINT, PITCH CONTROL 2 15@+% 1162 A CAP, GREASE ZERK 2 16+% 12460 CABLE, PITCH ASM 1 19+% 20005 SHAFT, TWIN PITCH 1 20@+% 11654 PIN, ROLL 1/8 X 1 PLATED...... 5...... QTY. INCLUDES USAGE ON BOTH TWIN PITCH ...... ASSEMBLIES, AND MITER BOX SHAFTS 22+% 1529 GEAR, MASTER, TPC 1 23+% 1530 GEAR, SLAVE, TPC 1 24@+% 1578 KEY, WOODRUFF, #3...... 9...... QTY. INCLUDES USAGE ON BOTH TWIN PITCH ...... ASSEMBLIES, AND MITER BOX SHAFTS 25+% 1579 SCREW, HHC 1/4 – 20 X 1/2 1 26+% 1586 PIN, ROLL 1/8 X 3/4 1 27+% 1604 BEARING, BALL 1 28+% 1612 BEARING, ALUM – PITCH CONTR 1 29@+% 1733 WASHER, 1/32 X 1/2 HARDENED 8 30+% 2007 SHAFT 1 33+% 2169 BEARING, THRUST, TORR #NTA 1220 1 34+% 2170 BEARING, RACE, TORR #TRA 1220 3 35+% 2311 SPACER, 3/4 X 1/2 X 0.8L 1 36+% 2367 SET COLLAR.NCLUDES ITEM 5 37+% 2620 SCREW, BHC 10 – 24 X 5/8 4 38@+% 2621 ZERK, GREASE STR 1/4 – 28 2 40+% 2649 COVER, PITCH CONT HOUSING 1 57 1617 LEVER ASSY, TROWEL ADJUSTMENT...... 1...... INCLUDES ITEMS W/# 58 2300 DECAL, AL PITCH, RH 1 59 2332 DECAL, AL PITCH, LH 1 60# 4014 SCREW, 2-3/16 P-K TYPE U DRIVE 2 61#$ 4403 CRANK KNOB 1 62#$ 3231 SPACER 1 63# 1615 CRANK LEVER 1 64#$ 1733 HARDENED WASHER 1 65#$ 1616 SHOULDER BOLT 1 66# 0185 SCREW, SHSS 3/8 – 16 X 3/8" 1 67# 1528 SCREW, SHSS 1/4 – 20 X 5/16" 1 68% 10510 SHAFT, PITCH CONTROL, RH TPC...... 1...... RIGHT SIDE ONLY 69% 10721 SLIDE BLOCK, RH PITCH CONTROL...... 1...... RIGHT SIDE ONLY 70 10114 WASHER, EXT. SHKP, #8 4 71 1162A CAP, GREASE ZERK/2 1 72 2621 FITTING GREASE 1 73 2737 KNOB, KIT...... 1...... INCLUDES ITEMS W/$

NOTICE Indicated quanties are for one pitch tower. If ordering for two pitch towers double the quantity.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 65 TWIN PITCH assy. 2 (LEFT/RIGHT)

CONTINUED FROM A , ITEM 13 CONTINUED FROM B , ITEM 19 SEE TWIN PITCH 1 ASSY. SEE TWIN PITCH 1 ASSY.

PART OF LEFT SIDE TWIN TYPICAL BOTH LEFT PITCH TOWER ASSEMBLY 31 AND RIGHT SIDES B COMPLETE MITER 32 BOX ASSEMBLY A

24

49

14 39 17 20 21 48

1 56 24 45 41 24 43

TO MITER 20 3 BOX 42 47 53 29 24 49 2 50 44 43 3 52 29 51 47 3 45 46 NOTES: 29 MITER BOX ASSEMBLY, ITEM 56 1 INCLUDES ITEMS WITHIN OUTLINE. 38 50 29 15 ITEM 49 (VERTICAL SHAFT) COUPLES THE LEFT AND RIGHT SIDES OF THE 2 TWIN PITCH CONTROLS. BOTH LEFT AND RIGHT SIDES ARE IDENTICAL UNLESS OTHERWISE NOTED.

page 66 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) TWIN PITCH assy. 2 (LEFT/RIGHT)

NO. PART NO. PART NAME QTY. REMARKS 3@+% 0181 B WASHER, LOCK, 1/4 MED 4 14@+% 11583 U-JOINT, PITCH CONTROL 2 15@+% 1162 A CAP, GREASE ZERK 2 16+% 12460 CABLE, PITCH ASM 1 17 10548 TUBE, PITCH CONTROL W/A 1 20@+% 11654 PIN, ROLL 1/8 X 1 PLATED...... 5...... QTY. INCLUDES USAGE ON BOTH ...... TWIN PITCH ASSEMBLIES, AND ...... MITER BOX SHAFTS 21 1499 DECAL, WHITEMAN 1 22+% 1529 GEAR, MASTER, TPC 1 23+% 1530 GEAR, SLAVE, TPC 1

24@+% 1578 KEY, WOODRUFF, #3...... 9...... QTY. INCLUDES USAGE ON BOTH ...... TWIN PITCHASSEMBLIES, AND ...... MITER BOX SHAFTS 29@+% 1733 WASHER, 1/32 X 1/2 HARDENED 8 31 2012 SLEEVE, ADJ – LONG, RIDER 1 32 2156 SPRING, COIL 1 38@+% 2621 ZERK, GREASE STR 1/4 – 28 2 39 2634 DECAL, PITCH TOWER 1 41 0202 SCREW, HHC 5/16 – 18 X 1 4 42 0300 B WASHER, FLAT, 5/16 SAE 4 43@ 0730 SCREW, HHC 1/4 – 20 X 1 8 44@ 11653 SLEEVE W/U JOINT 1 45@ 1577 SET COLLAR, 1/2 2 46@ 1987 MITER BOX, PITCH CONTROL 1 47@ 1988 MITER BOX, BEARING CAP RIDERS 2 48@ 2021 SHAFT, MITER VERT 1 49@ 2022 SHAFT, MITER VERTICAL...... 3...... QTY. INCLUDES USAGE ON BOTH ...... TWIN PITCH ASSEMBLIES, AND ...... MITER BOX SHAFTS 51@ 2845 SHAFT, MITER BOX HORIZ (HNN) 1 52@ 4514 SCREW, HHC 1/4 – 20 X 5/8 4 53 5283 NUT, NYLOC 5/16 – 18 4 56 11655 MITER BOX ASSY (HHN)...... 1...... INCLUDES ITEMS W/@

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 67 ENGINE mounting & throttle ASSY.

21 4 3 2

1 5

6

1 7

8

18

9 11 12

13 10 1 18

13 14

8 15

17

NOTES: 8 TO THROTTLE FOOT 1 PEDAL ASSY. 20 16 19 page 68 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) ENGINE mounting & throttle ASSY.

NO. PART NO. PART NAME QTY. REMARKS 1 0937 NUT, HEX 10-32 2 2 10237 WASHER, EXT. SHKP. #10 1 3 11710 SPACER, ENG THROTTLE 1 4 8133 SCREW, RHM 10-32 X 3/4 1 5 2203 WASHER, FLAT #10 1 6 2153 ROD END, 10-32 FEMALE RH 1 7 11771 BRACKET, ENGINE THROTTLE CABLE 1 8 0161 C WASHER, LOCK, 5/16 MED. 8 9 2299 SCREW, HHC M8-1.25 X 16mm 3 10 2124 CABLE, THROTTLE (RT) 1 11 10087 NUT, NYLOC 1/2-20 THIN 1 12 0447 WASHER, FLAT 1/2 SAE 1 13 0202 SCREW, HHC 5/16-18 X 1 3 14 0300 B WASHER, FLAT, 5/16 SAE 2 15 5283 NUT, NYLOC 5/16-18 3 16 2866 SCREW, HHC M8-1.25 X 20mm 4 17 12844 MOUNT, 31V ENGINE W/A 1 18 19468 GROMMET, MINOR PN Z-4004 2 19 12199 WASHER, FLAT 2 20 0183 COTTER OIN 2 21 11292 ENGINE, BRIGGS 31 HP DM950G 1

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 69 ENGINE CRADLE MOUNTING ASSY.

ENGINE MOUNT

STUD BOLTS ARE WELDED TO ENGINE MOUNT

HHN FRAME

HHN FRAME

ENGINE CRADLE MOUNT

1

2

3 2

3 4

5

6

2

7

page 70 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) ENGINE CRADLE MOUNTING ASSY.

NO. PART NO. PART NAME QTY. REMARKS 1 20051 CRADLE, ENGINE W/A 1 2 10136 WASHER, FLAT, 3/8 SAE 8 3 1063 NUT NYLOC 3/8-24 4 4 8156 SCREW, HHC 3/8-16 X 2-1/2 4 5 12832 WASHER, VIBRATION SNUB 4 6 12831 MOUNT, ENGINE VIBRATION 4 7 10133 NUT, NYLOC 3/8-18 4

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 71 ENGINE air cleaner/radiator ASSY.

13

12

3 4 5

1 2 11 4 1

10 3 3 5

4

9

8 6 4 15 4 14 4 4 6

1 3

4 6

6 NOTES:

1 PART OF NEGATIVE BATTERY CABLE 7 2 ITEMS WITHIN DASHED LINE (EXCEPT ITEM 7) ARE INCLUDED 2 WITH ENGINE. REFER TO ENGINE PARTS MANUAL.

3 INCLUDED WITH MUFFLER CLAMP. page 72 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) 4 INCLUDED WITH RADIATOR. ENGINE air cleaner/radiator ASSY.

NO. PART NO. PART NAME QTY. REMARKS 1 10434 CLAMP, 2” HOSE 2 2 12225 HOSE , AIR CLEANER MT 1 3 0948 WASHER, FLAT, 1/4 SAE 8 4 0161 C WASHER, LOCK, 5/16 MED. 6 5 0730 SCREW, HHC 1/4-20 X 1 2 6 12464 SCREW, HHC M6-1.0 X 16mm 3 7 11900 MOUNT, RADIATOR OVERFLOW 1 8 12102 MOUNT, AIR CLEANER W/A 1 9 19266 BLIND NUT 2 10 12103 CLAMP, 31V AIR CLEANER ASM 1 11 SCREW...... 2...... INCLUDED W/RADIATOR 12 12450 GUARD, RADIATOR 1 13 60049 TRIM EDGE 1/32 (62B3-1/32) 1.5FT 14 SCREW...... 2...... INCLUDED W/RADIATOR 15 WASHER...... 2...... INCLUDED W/RADIATOR

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 73 ENGINE muffler ASSY.

1

2

MOUNT TO ENGINE 8 EXHAUST PORT 13 3

4

5 11 10

6 9

6

7 6

8

12

page 74 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) ENGINE muffler ASSY.

NO. PART NO. PART NAME QTY. REMARKS 1 20089 MUFFLER, 31V 1 2 12848 EXHAUST FLANGE NUT 4 3 12847 EXHAUST GASKET 1 4 10114 WASHER, EXT. SHKP, #8 2 5 0655 SCREW, HHC 5/16-18 X 3/4 2 6 11819 SCREW, HHC 1/4-20 X 3/4 W/WASH 7 7 12545 PLATE, BELT GUARD SIDE...... 1...... COMET CLUTCH 7 22579 PLATE, BELT GUARD SIDE...... 1...... MULTI-CLUTCH 8 11534 NUT, “U” TYPE, 1/4-20 8 9 0161 C WASHER, LOCK, 5/16 MED. 4 10 1605 SCREW, HHC M8-1.25 X 25mm 4 11 20082 BELT GUARD/MUFFLER SUPPORT W/COMET 1 12 20098 PLATE, BELT GUARD REAR 1 13 20178 HEAT SHIELD, MUFFLER 1

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 75 ENGINE clutch ASSY. (old style)

1

13

12 1

10

8 11

3 9

8 2 7

NOTES:

1 TORQUE TO 150 FT. LBS

TORQUE TO 15 FT. LBS. BOLT IS INCLUDED WITH 2 ENGINE.

COMET CLUTCH 3 NO LONGER AVAILABLE

page 76 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) ENGINE clutch ASSY. (old style)

NO. PART NO. PART NAME QTY. REMARKS 1 20138 BELT, CVT-VANGUARD COMET ...... 2...... ORDER 2 BELTS FOR SPARES 7 3911758 ADAPTOR, CLUTCH 31 HP VANGUARD 1 8 20046 SCREW, HHC M8 125 X 25 MM GRADE 10.9 5 9 12878 CLUTCH, CVT 1-7/16 COMET ...... 1...... NO LONGER AVAILABLE ...... USE CLUTCH KIT P/N 22581 ...... TO UPGRADE TO ...... MULTI-CLUTCH SYSTEM 10 20215 .415 OD X 21/32 ID X 2-1/16L 1 11 4703 WASHER, LOCK, 5/8 MED 1 12 20057 SCREW, HHC 5/8-18 X4 1 13 23291 TOOL, CLUTCH REMOVAL 1

NOTICE Multi-Clutch components are not interchangeable with the prior Hoffco Comet drive system. The Hoffco Comet CVT system must be replaced with Multi-Clutch components in the event of a Hoffco Comet clutch failure.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 77 ENGINE clutch ASSY. (NEW style)

8

1 1 3 2

6 2

4 5

7

MULTI-CLUTCH UPGRADE KIT NOTES:

1 TORQUE TO 45 FT. LBS

2 TORQUE TO 34 FT. LBS

page 78 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) ENGINE clutch ASSY. (NEW style)

NO. PART NO. PART NAME QTY. REMARKS 1 23377 SCREW, HHC 7/16-20 X 6.5 1 2 23369 WASHER, STEP 7/16 1 3 23363-1 CLUTCH, UPPER, MULTI-CLUTCH 1 4 23365 BELT, CVT CLUTCH 2 5 23368 STUB SHAFT 1 6 22021 SCREW, HEX FLANGE M8 5 7 22581 KIT, HHN CVT REPLACEMENT 1 8 23371 PULLER, MULTI-CLUTCH 1

NOTICE Multi-Clutch components are not interchangeable with the prior Hoffco Comet drive system. The Hoffco Comet CVT system must be replaced with Multi-Clutch components in the event of a Hoffco Comet clutch failure.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 79 ENGINE FUEL ASSY.

MOUNT FUEL PUMP TO BACK SIDE OF BATTERY BOX.

17 4

16 15 3

OLD STYLE 3 BATTERY BOX 2 FUEL 1 TANK 3 14

5 19 6 20 7 NEW 8 CARBURETOR STYLE PART OF FUEL ENGINE TANK 9 10 FUEL FILTER LOCATED BEHIND BATTERY BOX 21 8 9 8 18

8

1 12

11 8

FUEL PUMP 13 3 LOCATED BEHIND BATTERY BOX

NOTES:

1 SECURE TO BATTERY BOX. 9

page 80 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) ENGINE FUEL ASSY.

NO. PART NO. PART NAME QTY. REMARKS 1 4514 SCREW, HHC 1/4-20 X 5/8...... 4...... OLD STYLE COMET CLUTCH 1 1579 SCREW, HHC 1/4-20 X .5...... 4...... NEW STYLE MULTI-CLUTCH 2 0161 C WASHER, LOCK, 5/16 MED...... 4...... OLD STYLE COMET CLUTCH 3 0948 WASHER, FLAT, 1/4 SAE...... 4...... OLD STYLE COMET CLUTCH 3 0948 WASHER, FLAT 1/4 SAE...... 12...... NEW STYLE MULTI-CLUTCH 4 11418 FUEL CAP/GAUGE (10.5”)...... 1...... S/N ZA020476761013007 AND BELOW 5 12404 TANK, HNN 5GAL...... 1...... S/N ZA020476761013007 AND BELOW 6 19633 BUSHING, RUBBER FUEL DAPCO10672 1 7 19661 VALVE , FUEL DRAIN DAPCO 11478 1 8 19473 CLAMP, WORM HOSE, #4 (1/4-5/8) 6 9 60013 HOSE, .25ID RUBBER FUEL LINE 3 10 11984 IN-LINE FUEL FILTER 5/16 1 11 10024 NUT, NYLOC 1/4-20 2 12 0131 A SCREW, HHC 1/4-20 X 3/4 2 13 12497 FUEL PUMP 1 14 0131 A SCREW, HHC 1/4-20 X 3/4...... 4...... NEW STYLE MULTI-CLUTCH 15 22588 MOUNT, FUEL TANK...... 1...... NEW STYLE MULTI-CLUTCH 16 10024 NUT, NYLOC 1/4-20...... 4...... NEW STYLE MULTI-CLUTCH 17 19266 NUT, BLIND 1/4-20 X 10GA 4 18 22077 TANK,FUEL W/A-5 GAL EPA/CARB...... 1...... S/N ZA020476761013008 AND ABOVE 19 22205 RACHET CAP, TOP VENT...... 1...... S/N ZA020476761013008 AND ABOVE 20 22081 SHUTOFF VALVE, 1/4 NPT, 1/4 HOSE...... 1...... S/N ZA020476761013008 AND ABOVE 21 16185 FITTING, PLUG 1/4MP SQ HD...... 1...... S/N ZA020476761013008 AND ABOVE

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 81 DRIVE ASSY. (OLD STYLE)

25

RIGHT SIDE 4 11

5

28 1

8 26

3 6 7 10

23 13 24 9 7 6 14 15 17

19 4

20 2 19 1 18 21 5 2 20 27

12 16 4 22 11 12 5

1 TORQUE TO 12 FT-LBS. LEFT SIDE

page 82 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) DRIVE ASSY. (OLD STYLE)

NO. PART NO. PART NAME QTY. REMARKS 1 #@$ 2043 SHAFT, CV JOINT BRT, 9-5/8 LONG 1 2%#@$ 2259 BOOT, C.V. JOINT 4 3 # 10909 KEY, 3/16 X 11/16 1 4 #@$ 0126 KEY, WOODRUFF #9 4 5 #@$ 2090 RING, SNAP TRUARC #5100- 106 4 6 # 1146 SCREW, FHSC 5/16- 18 X 1 NYLOC 2 7 # 2037 WASHER, RETAINING 2 8 # 2029 COUPLER, 1 ID. RIDER 1 9 # 10337 BEARING, PILLOW BLOCK FAF YAK- 1 2 10 # 20044 SPACER, BEARING SHAFT 1 11 # 2186 SCREW, SHC 5/16-18 X 2-1/4 PLTD 9 12 # 0161 C WASHER, LOCK, 5/16 MEDIUM 12 13 # 20350 PULLEY, CVT LOWER 1 14 # 20043 SHAFT, DRIVE BEARING 1 15 # 20116 O-RING, SIZE- 031 BUNA N 1 16 # 20184 SHAFT, CV JOINT, HHN 7-13/16 LONG 1 17 # 12590 COUPLER, CV JOINT COMET CLUTCH 1 18 # 20056 SCREW, HHC 1/4- 28 X 3/4 GRD. 8 3 19 #@$ 2052 JOINT, CV W/BOOT...... 4...... INCLUDES ITEM W/% 20 #@$ 11108 GASKET, CV JOINT BOOT 4 21 #@$ 60103 TIE WRAP, .312 X 8L X .082 THICK 4 22 # 0243 SCREW, SHC 5/16- 18 X 1-3/4 3 23 # 10136 WASHER, FLAT 3/8 SAE 4 24 # 10133 NUT, NYLOC 3/8 - 16 4 25 # 20186 PLATE, BEARING MOUNT 2 26 23449 DRIVE ASSY., W/ COMET TD...... 1...... INCLUDES ITEMS W/# 27# 23450 CV JOINT ASSY, RH...... 1...... INCLUDES ITEMS W/@ 28# 23451 CV JOINT ASSY, LH...... 1...... INCLUDES ITEMS W/$

NOTICE Multi-Clutch components are not interchangeable with the prior Hoffco Comet drive system. The Hoffco Comet CVT system must be replaced with Multi-Clutch components in the event of a Hoffco Comet clutch failure.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 83 DRIVE ASSY. (new STYLE)

25

RIGHT SIDE 4 11

5

28 1

8

6 7 10 3 23 24 2 29 9 13 31 14 7 30 15 19 17 4

20 2 19 21 5 2 1 18 20 27

12 16 4 22 11 12 5

1 TORQUE TO 10 FT-LBS. LEFT SIDE

2 NEW STYLE DRIVE ASSEMBLY MUST BE INSTALLED PER INSTRUCTION SHEET, P/N 23444, INCLUDED WITH MULTI-CLUTCH UPGRADE KIT

page 84 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) DRIVE ASSY. (new STYLE)

NO. PART NO. PART NAME QTY. REMARKS 1@$ 2043 SHAFT, CV JOINT BRT, 9-5/8 LONG 1 2+@$ 2259 BOOT, C.V. JOINT 4 3 10909 KEY, 3/16 X 11/16 1 4@$ 0126 KEY, WOODRUFF #9 4 5@$ 2090 RING, SNAP TRUARC #5100- 106 4 6 1146 SCREW, FHSC 5/16- 18 X 1 NYLOC 1 7 2037 WASHER, RETAINING 2 8 2029 COUPLER, 1 ID. RIDER 1 9 10337 BEARING, PILLOW BLOCK FAF YAK- 1 2 10 23431 SPACER, 1.25DIA X 1.01ID X 4.81 1 11 2186 SCREW, SHC 5/16-18 X 2-1/4 PLTD 9 12 0161 C WASHER, LOCK, 5/16 MEDIUM 12 13 23363-2 PULLEY, CVT DRIVEN LOWER 1 14 23430 SHAFT, DRIVE BEARING 1.00 x 12.5 1 15 20116 O-RING, SIZE- 031 BUNA N 1 16 20184 SHAFT, CV JOINT, HHN 7-13/16 LONG 1 17 23433 COUPLER, CV JOINT CCVT 1 18 9165 SCREW, HHFS 1/4-28 X 3/4 GR5 PATCH 3 19@$ 2052 JOINT, CV W/BOOT...... 4...... INCLUDES ITEM W/+ 20@$ 11108 GASKET, CV JOINT BOOT 4 21@$ 1662 TIE, CABLE TY-RAP 4 22 0243 SCREW, SHC 5/16- 18 X 1-3/4 3 23 10136 WASHER, FLAT 3/8 SAE 4 24 10133 NUT, NYLOC 3/8 - 16 4 25 20186 PLATE, BEARING MOUNT 2 27 23450 CV JOINT ASSY, RH...... 1...... INCLUDES ITEMS W/@ 28 23451 CV JOINT ASSY, LH...... 1...... INCLUDES ITEMS W/$ 29 20363 KEY, REC .188 X .25 X 2.5 1 30 9092 SCREW, FHSC 5/8-18X1.25 NYLON 1 31 11773 SHIM, .031" A/R

NOTICE Multi-Clutch components are not interchangeable with the prior Hoffco Comet drive system. The Hoffco Comet CVT system must be replaced with Multi-Clutch components in the event of a Hoffco Comet clutch failure.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 85 spider assy. (left)

LEFT-SIDE SPIDER ASSEMBLY (5-BLADE). VIEW FROM OPERATORS SEAT.

23 13 22 20

19 4 3 1 18

17

12

13 2 10 11 16 1 2 6 1 15 24 5 4 14 1 8

25 9 3 7

NOTES: 1 APPLY LOCTITE P/N 1477 TO ITEMS 6, 14, AND 16. 2 TORQUE TO 90 FT. LBS.

LEFT-SIDE SPIDER ASSEMBLY 3 P/N 12932 INCLUDES ALL ITEMS WITHIN OUTLINE.

4 PART OF ITEM 18 (P/N11431).

page 86 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) spider assy. (left)

NO. PART NO. PART NAME QTY. REMARKS 1 12932 SPIDER ASM, LEFT SIDE (1-1/2) 1 2 2829 ARM, TROWEL EXTENDED 5 3 11903 LEVER, TROWEL ARM LEFT SIDE 5 4 0166 A WASHER, LOCK, 3/8 MED 5 5 1876 NUT, HEX JAM 3/8 5 6 0164 B SCREW, HHC 5 7 9006 PIN, ROLL 5/16 X 2 5 8 11039 BUSHING, ARM 2 PIECE 10 9 9111 SPRING, LEFT TROWEL 5 10 1875 WASHER, INT SHKP 3/8 5 11 1322 SCREW ASSY, ARM RETAINING 5 12 21208 PLATE, SPIDER 5 BLADE (1-1/2 SHAFT) 1 13 1162 A CAP, GREASE ZERK #2 5 14 11602 SCREW, HHC 3/8-16 X 3/8 5 15 1456 NUT, HEX FINISH 3/8 -16 2 16 12097 SCREW, SQHS 3/8-16 X 1-3/4 CONE 8 2 17 11419 PLATE, WEAR 1 18 11431 THRUST COLLAR...... 1...... INCLUDES ITEM W/+ 19+ 20426 BUSHING, THRUST COLLAR 1 20 2621 FITTING, GREASE 1 22 12687 KEY, 3/8 X 2 1 23 12779 BEARING, THRUST 6017 2RS W/FLANGE 1 24 0105 SCREW, HHCS 5/16-18 X 11/2" 15 25 0161C Lock Washer 5/16" 15

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 87 spider assy. (right)

RIGHT-SIDE SPIDER ASSEMBLY (5-BLADE). VIEW FROM OPERATORS SEAT.

22 23 19 4

18 17 20 3 1 8

14

12 1 11 1 24 9 13 15 1 2 10 16 7 25 3

6 4 8 2 5

NOTES: 1 APPLY LOCTITE P/N 1477 TO ITEMS 9, 12, AND 15. 2 TORQUE TO 90 FT. LBS.

RIGHT-SIDE SPIDER ASSEMBLY 3 P/N 12933 INCLUDES ALL ITEMS WITHIN OUTLINE.

4 PART OF ITEM 18 (P/N11431).

page 88 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) spider assy. (right)

NO. PART NO. PART NAME QTY. REMARKS 1 12933 SPIDER ASM, RIGHT SIDE (1-1/2) 1 2 2829 ARM, TROWEL EXTENDED 5 3 11904 LEVER, TROWEL ARM RIGHT SIDE 5 4 9006 PIN, ROLL 5/16 X 2 5 5 2143 SPRING, RIGHT TROWEL 5 6 1875 WASHER, INT SHKP 3/8 5 7 1322 SCREW ASSY, ARM RETAINING 5 8 1162 A CAP, GREASE ZERK #2 5 9 11602 SCREW, HHC 3/8-16 X 3/8 5 10 0166 A WASHER, LOCK, 3/8 MED 5 11 1876 NUT, HEX JAM 3/8 5 12 0164 B SCREW, HHC 5 13 11039 BUSHING, ARM 2 PIECE 10 14 21208 PLATE, SPIDER 5 BLADE (1-1/2 SHAFT) 1 15 12097 SCREW, SQHS 3/8-16 X 1-3/4 CONE 8 2 16 1456 NUT, HEX FINISH 3/8 -16 2 17 11419 PLATE, WEAR 1 18 11431 THRUST COLLAR...... 1...... INCLUDES ITEM W/+ 19+ 20426 BUSHING, THRUST COLLAR 1 20 2621 FITTING, GREASE 1 22 12687 KEY, 3/8 X 2 1 23 12779 BEARING, THRUST 6017 2RS W/FLANGE 1 24 0105 SCREW, HHCS 5/16-18 X 11/2" 15 25 0161C Lock Washer 5/16" 15

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 89 stabilizer ring assy.

5

1

2 3

4

1 4

page 90 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) stabilizer ring assy.

NO. PART NO. PART NAME QTY. REMARKS 1 0161C Lock Washer 5/16" 5 2 1237 SCREW, SCH 5/16-18 X 7/8 5 3 1723 ROD END, 5/16-24 MALE 4 4 6014C NUT, HEX FINISH 5/16-24 8 5 12095 RING, STABILIZER, EXT ARM, HD 1

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 91 seat and frame assy.

4

6

15 5 9

8 1

14 17 DIRECTION OF 3 SEAT TILT.

2 1

7 11 13

NOTES:

12 1 INCLUDED WITH ITEM 7. 16 page 92 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) seat and frame assy.

NO. PART NO. PART NAME QTY. REMARKS 1 0183 PIN, COTTER 1/8X1 1/4 2 2 0300 WASHER, FLAT, 5/16 SAE 4 3 10133 NUT, NYLOC 3/8-16 1 4 11286 SEAT, ADJUSTABLE 1 5 11593 SPRING, SEAT 1 6 11660 PLATE, SEAT W/A HHN 1 7 12005 SWITCH, KILL 1 8 12987 FRAME, HNN SEAT W/A VAN 1 9 4001 WASHER, FLAT, 3/8 USS PLD 1 11 5054A WASHER, LOCK, 1/2 MED. 6 12 5218 SCREW, HHC 1/2-13X1 1/2 6 13 5283 NUT, NYLOC 5/16-18 4 14 8081 PIN, CLEVIS 1/2X2 3/4 2 15 8156 SCREW, HHC 3/8-16X2 1/2 1 16 10176 NUT, NYLOC 1/2-13 2 17 3214 SCREW 2

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 93 frame and components

VIEW FROM OPERATOR’S SEAT

14 12

11 9 2

15

10

13

2 13

DER W O P

D E C O AT 6 8

4

7

1

3

17 16 page 94 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) frame and components

NO. PART NO. PART NAME QTY. REMARKS 1 0183 PIN COTTER 3/32X3/4 4 2 0948 WASHER, FLAT, 1/4 SAE 8 3 0448 WASHER, FLAT, 3/8 SAE 4 4 10818 DECAL, MQ WHITEMAN, 23-1/2” 1 5 11223 PANEL, FRONT (HHN) 1 6 11534 NUT “U” TYPE, 1/4-20 6 7 12896 FRAME (HNN-V) 1 8 13118 DECAL, “POWDER COATED” 1 9 2203 WASHER, FLAT, #10 3 10 2411 PLATE, SERIAL, RIDER 1 11 2429 HOLDER, SPARE BELT ALL 1 12 4014 SCREW, 2-3/16 P-K TYPE U DRIVE 2 13 4514 SCREW, HHC 1/4-20X5/8 8 14 5065B SCREW, RHM 10-32X1/2 1 15 8126 CLAMP, HOSE SUPPORT 1/2” SMALL 2 16 11499 YOKE, HTO/HTN-V 2 17 11648 PIN, YOKE 2

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 95 foot pedals assy.

VIEW FROM OPERATOR’S SEAT

1

1

9

8

7

11 4

3

5

10

2

6

page 96 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) foot pedals assy.

NO. PART NO. PART NAME QTY. REMARKS 1 0202 SCREW, HHC 5/16-18X1 4 2 0300B WASHER, FLAT, 5/16 SAE 4 3 10136 WASHER, FLAT, 3/8 SAE 2 4 2086 PEDAL, ACCELERATOR 1 5 2772 PIN, ACC MOUNT 1 6 5283 NUT, NYLOC 5/16-18 4 7 6014B PIN, COTTER 3/32X1 2 8 12985 LEFT SIDE FOOT REST 1 9 12986 RIGHT SIDE FOOT REST 1 10 3233 WASHER, FENDER, 1.5odX3/8id 4 11 3083 SPACER 1

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 97 throttle foot pedal assy.

THROTTLE BRACKET (PART OF ENGINE)

10

13 15 11

12

14 1

1

1

16

9 7 8 1 3

6

4

5

NOTES:

1 PART OF THROTTLE CABLE ASSY. 2 5 page 98 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) throttle foot pedal assy.

NO. PART NO. PART NAME QTY. REMARKS 1 0937 NUT, HEX 10-32 3 2 10018 SCREW, SHC 10-32X1 NO PLATE 1 3 10019 NUT, NYLOC 10-32 1 4 2153 ROD END, 10-32 FEMALE RH 1 5 2203 WASHER, FLAT, #10 2 6 2753 SPRING, THROTTLE RETURN, LOWER 1 7 2754 ADAPTOR, THROTTLE RET. SPRING LG. 1 8 2755 ADAPTOR, THROTTLE RET. SPRING SHOR 1 9 2124 CABLE, THROTTLE (RT) 1 10 8133 SCREW, RHM 10-32 X 3/4 1 11 2203 WASHER, FLAT #10 1 12 11710 SPACER, ENGINE THROTTLE 1 13 0300 B WASHER, FLAT, 5/16 SAE 1 14 2153 ROD END, 10-32 FEMALE RH 1 15 10237 WASHER, EXT. SHKP, 5/16? 4 16 11771 BRACKET, ENGINE THROTTLE CABLE 1

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 99 battery assy.

13

5

11 12

9

STARTER

6 7

BLACK CABLE (NEGATIVE) 8 BATTERY 9 RED CABLE (POSITIVE) 3 2 CONNECT TO ENGINE GROUND

1 10 SEE SPRAY ASSEMBLY

2

4

3 page 100 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) battery assy.

NO. PART NO. PART NAME QTY. REMARKS 1 0730 SCREW, HHC 1/4-20X1 4 2 0948 WASHER, FLAT, 1/4SAE 8 3 0949 NUT, HEX FINISH 1/4-20 4 4 10024 NUT, NYLOC 1/4-20 4 5 10031 WASHER, EXT SHKP, 1/4 2 6 10313 CABLE, NEG BATTERY BLACK 20” 1 7 19303 CABLE, POS BATTERY RED 48” 1 8 10315 BATTERY, 12V WET GROUP 22 1 9 10318 BATTERY BOX, GROUP 24, W/LID 1 10 11362 BATTERY FRAME BOX 1 11 11692 BRACKET, BATTERY BOX HOLD DOWN 1 12 11693 BOLT, BATTERY BRKT 2 13 2509 NUT, WING 1/4-20 PLATED 2

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 101 SPRAY assy.

16 13 15

13 SPRAY BRACKET IS WELDED TO FOOT REST. 15 16 57" 4 12 14 2 16 14 1 5 25 17 14 14 57" 17 8" 18

8"

14

14

5 6

9 14 1 19 11 7 2 18 1 18 8" 2 2 14 8" 3 4

7 10 14 9 19 14 9 3

3 8 2 6 1

20 3 21 22 NOTES: SPRAY MOUNTING BRACKET 2 IS WELDED TO FOOT REST. NO 1 MOUNTING HARDWARE IS REQUIRED. SPRAY PUMP 2 SEE WIRING DIAGRAM MATING CONNECTOR PLACE SPRAY PUMP CONNECTOR 3 WIRES INSIDE BLACK SPIRAL SLEEVING. page 102 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) SPRAY assy.

NO. PART NO. PART NAME QTY. REMARKS 1 0131 A SCREW, HHC 1/4-20 X 3/4 6 2 0181 B WASHER, LOCK, 1/4 MED 6 3 0948 WASHER, FLAT, 1/4 SAE 6 4 12548 PUMP, SPRAY 2 5 10022 FITTING, PLASTIC 6 BARB – 4 BARB 2 6 12008 FITTING, 90 6 BARB – 4 BARB FUEL 2 7 12009 SCREEN, FILTER 2 8 12403 TANK, RETARDANT 5 GALLON 1 9 19633 BUSHING, RUBBER FUEL 3 10 19661 VALVE, FUEL DRAIN 1 11 2108 CAP, SPRAY TANK 1 12 2898 WASHER, BONDED NEOPRENE 1 X 1/2 2 13 2912 FITTING, 90 4 BARB –1/4 FP 2 14 2918 CLAMP, HOSE, 475 - 536 ID 8 15 2930 CLAMP, HOSE, 360 - 410 ID 4 16 392292 NOZZLE, SPRAY 1 17 60001 HOSE, 25 ID X 375 OD 10 FT. 18 60002 HOSE, 375 ID X 5 OD 32" 19 60058 HOSE, 1/4 X 3/8 PVC FUEL YELLOW 4" 20 60221 CABLE, SLEEVING BLACK SPRIAL 1 FT. 21 2687 TBD 22 2680 TBD

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 103 FRONT PANEL assy.

11

19

3

16 9 7

14 3 5 13 8

15 1 30 2

23 27 3 6 EC 22 U

25

DATCON 0 00 HOURS0 0 8 26 1/10 14

20 P AT EN T P 1 EN DIN 24 4 G 11 2

29 12 28

20 14

29 23 28

17

21 NOTES: CHOKE CABLE ASSY. CONNECT 1 TO CARBURETOR LINKAGE

ELECTRONIC CONTROL UNIT (ECU) 2 IS INCLUDED WITH ENGINE, SEE VANGUARD ENGINE OWNERíS MANUAL.

page 104 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) FRONT PANEL assy.

NO. PART NO. PART NAME QTY. REMARKS 1 0202 SCREW, HHC 5/16-18 X 1 2 2 0300B WASHER, FLAT, 5/16 SAE 2 3 10019 NUT, NYLOC 10-32 8 4 10114 WASHER, EXT. SHKP, #8 2 5 10958 SWITCH, IGNITION VAN W/KEYS 1 6 11098 CIRCUIT BREAKER, 40A, 12V 1 7 11534 NUT, “U” TYPE, -20 4 8 11819 SCREW, HHC -20 X 3/4 W/WASH 4 9 11861 PANEL, HTO/N VANGUARD CONTROL 1 10 11912 DECAL, “PATENT PENDING” 1 11 12571 DECAL, INSTRUMENT LITES (31V) 1 12 12018 CONNECTOR, RELAY 1 13 19301 TERMINAL STRIP .5 14 2203 WASHER, FLAT, #10 4 15 2580 CABLE, CHOKE 1 16 2673 CIRCUIT BREAKER, 30A, 12V 1 17 3233 WASHER, FENDER, 1.5od X 3/8id 2 19 4682 SWITCH, TOGGLE 1 20 5065B SCREW, RHM 10-32 X 1/2 4 21 5283 NUT, NYLOC 5/16-18 2 22 8381 BOOT, TOGGLE SWITCH 1 23 10024 NUT, NYLOC 1/4 20 4 24 12017 ACCESSORY RELAY...... 1...... S/N 61131 AND ABOVE 24 11792 SOLENOID...... 1...... S/N 61130 AND BELOW 25 11078 KEY, IGNITION SWITCH 1 26 11694 HOUR METER, DATCON 1 27 11247 DECAL (HELMET, FOOT, HAND) 1 28 0948 FLAT WASHER 1/4 " 4 29 12287 SCREW, THP 1/4-20 X 3/4-SS 4 30 825572 ECU IGNITION MODULE 1

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 105 TOP RIGHT PANEL assy.

1

2

3 GE AR CH ER AT W IL O

page 106 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) TOP RIGHT PANEL assy.

NO. PART NO. PART NAME QTY. REMARKS 1 12307 BULB, INDICATOR LIGHT 3 2 12305 PLUG INDICATOR LIGHT 3 3 12571 DECAL, OPERATING LIGHTS 1

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 107 E-Z MOVER AND LIFT HANDLE ASSY.

1

2 6 3

14

12

4 13 10 12

6 13 5 7 15 8 5

11 14 9

15 7 9 13 8

page 108 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) E-Z MOVER AND LIFT HANDLE ASSY.

NO. PART NO. PART NAME QTY. REMARKS 1 0189 HAND GRIP 2 2 2336 UPPER HANDLE 1 3 1869 SNAP PIN 1 4 7170 CLIP 4 5 11684 DOLLY AXLE 4 6 10440 WHEEL & TIRE 4 7 0655 SCREW, HHCS 5/16-18 x 3/4" 2 8 0300B FLAT WASHER 5/16" 2 9 2364 WHEEL 2 10 10445 FRAME 1 11 4684 FLAT WASHER 5/8" 2 12 0183 COTTER PIN 4 13 10446 FLAT WASHER 3/4" 8 14 8151 FLAT WASHER 3/4" SAE 8 15 0161C LOCK WASHER 5/16" 2

EMR-2 E-Z MOVER ASSY — PURCHASE THROUGH MQ UNIT SALES DEPT.

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 109 Terms and Conditions of Sale — Parts paymeNT TeRms 5. Parts must be in new and resalable Multiquip reserves the right to quote and Terms of payment for parts are net 30 days. condition, in the original Multiquip sell direct to Government agencies, and to package (if any), and with Multiquip part Original Equipment Manufacturer accounts FReIgHT pOLICy numbers clearly marked. who use our products as integral parts of their own products. All parts orders will be shipped collect or 6. The following items are not returnable: prepaid with the charges added to the invoice. a. Obsolete parts. (If an item is in the speCIaL expeDITINg seRVICe All shipments are F.O.B. point of origin. price book and shows as being A $35.00 surcharge will be added to the Multiquip’s responsibility ceases when a replaced by another item, it is invoice for special handling including bus signed manifest has been obtained from the obsolete.) carrier, and any claim for shortage or damage shipments, insured parcel post or in cases b. Any parts with a limited shelf life must be settled between the consignee and where Multiquip must personally deliver the (such as gaskets, seals, “O” rings, the carrier. parts to the carrier. and other rubber parts) that were mINImum ORDeR purchased more than six months LImITaTIONs OF seLLeR’s LIaBILITy prior to the return date. The minimum charge for orders from Multiquip Multiquip shall not be liable hereunder for is $15.00 net. Customers will be asked for c. Any line item with an extended damages in excess of the purchase price of instructions regarding handling of orders not dealer net price of less than the item with respect to which damages are meeting this requirement. $5.00. claimed, and in no event shall Multiquip be d. Special order items. liable for loss of profi t or good will or for any ReTuRNeD gOODs pOLICy other special, consequential or incidental e. Electrical components. damages. Return shipments will be accepted and f. Paint, chemicals, and lubricants. credit will be allowed, subject to the following LImITaTION OF WaRRaNTIes provisions: g. Decals and paper products. No warranties, express or implied, are 1. A Returned Material Authorization h. Items purchased in kits. made in connection with the sale of parts or must be approved by Multiquip prior to 7. The sender will be notifi ed of any material trade accessories nor as to any engine not shipment. received that is not acceptable. manufactured by Multiquip. Such warranties 2. To obtain a Return Material Authorization, 8. Such material will be held for five made in connection with the sale of new, a list must be provided to Multiquip working days from notifi cation, pending complete units are made exclusively by a Parts Sales that defi nes item numbers, instructions. If a reply is not received statement of warranty packaged with such quantities, and descriptions of the items within five days, the material will be units, and Multiquip neither assumes nor to be returned. returned to the sender at his expense. authorizes any person to assume for it any other obligation or liability whatever in 9. Credit on returned parts will be issued a. The parts numbers and descriptions connection with the sale of its products. Apart at dealer net price at time of the original must match the current parts price from such written statement of warranty, purchase, less a 15% restocking list. there are no warranties, express, implied or charge. b. The list must be typed or computer statutory, which extend beyond the description generated. 10. In cases where an item is accepted, for of the products on the face hereof. c. The list must state the reason(s) which the original purchase document for the return. can not be determined, the price will be based on the list price that was effective Effective: February 22, 2006 d. The list must reference the sales twelve months prior to the RMA date. order(s) or invoice(s) under which the items were originally 11. Credit issued will be applied to future purchased. purchases only. e. The list must include the name pRICINg aND ReBaTes and phone number of the person Prices are subject to change without prior requesting the RMA. notice. Price changes are effective on a 3. A copy of the Return Material Authorization specifi c date and all orders received on or must accompany the return shipment. after that date will be billed at the revised price. Rebates for price declines and added charges 4. Freight is at the sender’s expense. All for price increases will not be made for stock parts must be returned freight prepaid to on hand at the time of any price change. Multiquip’s designated receiving point.

page 110 — HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) notes

HHN31V RIDE-ON POWER TROWEL • operation and parts manual — rev. #7 (04/26/11) — page 111 Operation and Parts Manual

HERE’S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING

United StateS Multiquip Corporate Office MQ Parts Department 18910 Wilmington Ave. Tel. (800) 421-1244 800-427-1244 Fax: 800-672-7877 Carson, CA 90746 Fax (800) 537-3927 310-537-3700 Fax: 310-637-3284 Contact: [email protected] Service Department Warranty Department 800-421-1244 Fax: 310-537-4259 800-421-1244 Fax: 310-943-2249 310-537-3700 310-537-3700 Technical Assistance 800-478-1244 Fax: 310-943-2238 mexico United Kingdom MQ Cipsa Multiquip (UK) Limited Head Office Carr. Fed. Mexico-Puebla KM 126.5 Tel: (52) 222-225-9900 Unit 2, Northpoint Industrial Estate, Tel: 0161 339 2223 Momoxpan, Cholula, Puebla 72760 Mexico Fax: (52) 222-285-0420 Globe Lane, Fax: 0161 339 3226 Contact: [email protected] Dukinfield, Cheshire SK16 4UJ Contact: [email protected] Canada Multiquip 4110 Industriel Boul. Tel: (450) 625-2244 Laval, Quebec, Canada H7L 6V3 Tel: (877) 963-4411 Contact: [email protected] Fax: (450) 625-8664

© COPYRIGHT 2011, MULTIQUIP INC.

Multiquip Inc, the MQ logo and the Whiteman logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the property of their respective owners and used with permission.

This manual MUsT accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.

The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published in this publication at any time without notice and without incurring any obligations.

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